Question 1 Topic 2.1 · Concept check
If 4(x − 3) = 2x + 10, what is the value of x?
A 11 B 6.5 C 13 D 22
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Question 2 Topic 2.1 · Apply it
A line passes through the points (2, 5) and (6, 17). Which equation represents the line?
A y = 3x − 1 B y = 3x + 5 C y = (1/3)x + 13/3 D y = 4x − 3
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Question 3 Topic 2.1 · Concept check
If 2x + 3y = 12 and x − y = 1, what is the value of x + y?
A 2 B 3 C 5 D 6
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Question 4 Topic 2.1 · Apply it
A gym charges a one-time $40 sign-up fee plus $25 per month. Which equation gives the total cost C, in dollars, for m months of membership?
A C = 40m + 25 B C = 65m C C = 25(m + 40) D C = 25m + 40
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Question 5 Topic 2.1 · Apply it
The height h, in centimeters, of a plant w weeks after it was measured is modeled by h = 1.5w + 12. What is the best interpretation of 1.5 in this context?
A The plant's height when it was first measured B The plant's height after 1 week C The number of centimeters the plant grows each week D The number of weeks the plant was measured
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Question 6 Topic 2.1 · Concept check
Which inequality describes all solutions to 5 − 2x > 11?
A x > −3 B x > 3 C x < 3 D x < −3
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Question 7 Topic 2.1 · Apply it
In the system 3x + ky = 7 and 6x + 10y = 5, k is a constant. For what value of k does the system have no solution?
A 2 B 5 C 10 D 20
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Question 8 Topic 2.1 · Apply it
Line ℓ has equation y = −(2/3)x + 4. Line m is perpendicular to line ℓ and passes through (0, −1). Which is an equation of line m?
A y = −(3/2)x − 1 B y = (2/3)x − 1 C y = (3/2)x − 1 D y = −(2/3)x − 1
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Question 9 Topic 2.1 · Apply it
A theater sold 150 tickets for a total of $1,520. Adult tickets cost $12 and student tickets cost $8. How many adult tickets were sold?
A 80 B 70 C 95 D 110
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Question 10 Topic 2.1 · Concept check
At what point does the graph of 3x − 4y = 24 cross the x-axis?
A (0, −6) B (−6, 0) C (0, 8) D (8, 0)
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Question 11 Topic 2.1 · Concept check
If (2/3)n = 18, what is the value of (1/2)n?
A 9 B 12 C 13.5 D 27
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Question 12 Topic 2.1 · Apply it
For the linear function f, f(2) = 7 and f(5) = 16. What is the value of f(10)?
A 19 B 25 C 28 D 31
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Question 13 Topic 2.1 · Apply it
In the equation 3(2x − a) = 6x − 12, a is a constant. If the equation has infinitely many solutions, what is the value of a?
A −4 B 3 C 4 D 12
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Question 14 Topic 2.1 · Apply it
A tank holds 500 liters of water and drains at a constant 20 liters per minute. After how many minutes will the tank hold 140 liters?
A 18 B 7 C 25 D 32
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Question 15 Topic 2.1 · Apply it
A student earns $15 per hour tutoring and $10 per hour walking dogs and wants to earn at least $300 this month. If t is hours tutoring and d is hours walking dogs, which inequality represents this situation?
A 10t + 15d ≥ 300 B 15t + 10d ≤ 300 C 25(t + d) ≥ 300 D 15t + 10d ≥ 300
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Question 16 Topic 2.2 · Concept check
What is the positive solution to x2 − 5x − 14 = 0?
A 2 B 5 C 7 D 14
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Question 17 Topic 2.2 · Concept check
If f(x) = 2x2 − 3x + 1, what is the value of f(−2)?
A 15 B 3 C −1 D −13
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Question 18 Topic 2.2 · Apply it
A colony of bacteria starts with 500 bacteria and doubles every 3 hours. Which function gives the number of bacteria P after t hours?
A P = 500(2)3t B P = 500(2)t/3 C P = 500(3)t/2 D P = 500 + 2(t/3)
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Question 19 Topic 2.2 · Concept check
Which expression is equivalent to (x + 3)2 − (x − 3)2 ?
A 2x2 + 18 B 18 C 6x D 12x
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Question 20 Topic 2.2 · Concept check
What is the minimum value of y = (x − 4)2 − 9?
A −9 B −4 C 4 D 9
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Question 21 Topic 2.2 · Apply it
For what value of c does the equation x2 + 6x + c = 0 have exactly one real solution?
A 3 B 6 C 9 D 36
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Question 22 Topic 2.2 · Apply it
What are all the solutions to √(x + 7) = x − 5?
A 2 only B 9 only C 2 and 9 D There are no solutions.
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Question 23 Topic 2.2 · Concept check
If (x2 − 9)/(x + 3) = 5 and x ≠ −3, what is the value of x?
A 8 B 2 C √14 D 14
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Question 24 Topic 2.2 · Concept check
Which expression is equivalent to (16x8 )1/2 , for x > 0?
A 8x4 B 16x4 C 4x4 D 4x8
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Question 25 Topic 2.2 · Apply it
The value V, in dollars, of a car t years after it was bought is modeled by V = 24,000(0.85)t . Which statement best describes the car's value?
A It decreases by 85% each year. B It decreases by 15% each year. C It decreases by $0.85 each year. D It increases by 85% each year.
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Question 26 Topic 2.2 · Apply it
The function f is defined by f(x) = x2 , and g(x) = f(x − 2) + 3. What is the vertex of the graph of g?
A (−2, 3) B (2, −3) C (2, 3) D (−2, −3)
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Question 27 Topic 2.2 · Concept check
What is the sum of the solutions to 2x2 − 8x + 3 = 0?
A −8 B −4 C 3/2 D 4
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Question 28 Topic 2.2 · Apply it
In the polynomial p(x) = x3 − 2x2 + kx − 6, k is a constant. If x − 3 is a factor of p(x), what is the value of k?
A −3 B −1 C 1 D 3
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Question 29 Topic 2.2 · Apply it
The function h is defined by h(x) = a·bx , where a and b are positive constants. If h(0) = 5 and h(2) = 45, what is the value of h(3)?
A 65 B 90 C 135 D 405
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Question 30 Topic 2.2 · Apply it
Which point is a solution to the system y = x2 − 4 and y = 2x − 1?
A (1, 1) B (0, −4) C (−3, −7) D (−1, −3)
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Question 31 Topic 2.3 · Apply it
A jacket that normally costs $80 is on sale for 25% off. A 10% sales tax is then added to the sale price. What is the final cost of the jacket?
A $66 B $52 C $54 D $68
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Question 32 Topic 2.3 · Apply it
There are 2.54 centimeters in 1 inch and 12 inches in 1 foot. How many centimeters long is a board that is 3 feet long?
A 7.62 B 14.17 C 91.44 D 108
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Question 33 Topic 2.3 · Data analysis
Students who prefer online or in-person classes (hypothetical survey) Online In person Total Grade 10 30 70 100 Grade 11 45 55 100 Total 75 125 200
A student who prefers online classes is chosen at random. What is the probability that the student is in grade 11?
A 0.225 B 0.375 C 0.45 D 0.6
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Question 34 Topic 2.3 · Data analysis
A data set contains the values 3, 5, 7, 9 and 26. Which statement about the data set is true?
A The mean is greater than the median. B The median is greater than the mean. C The mean and the median are equal. D The range is 20.
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Question 35 Topic 2.3 · Data analysis
In a random sample of 400 voters in a city of 60,000 voters, 240 said they support a new park. The margin of error for the sample proportion is 4 percentage points. Which conclusion is most reasonable?
A Exactly 60% of the city's voters support the new park. B It is plausible that between 56% and 64% of the city's voters support the new park. C Between 240 and 400 of the city's voters support the new park. D Less than half of the city's voters support the new park.
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Question 36 Topic 2.3 · Data analysis
For a group of students, the line of best fit relating minutes spent reading per day, x, to vocabulary test score, y, is y = 2.4x + 15. Based on this line, how much higher is the predicted score for each additional 5 minutes of reading per day?
A 2.4 B 12 C 15 D 27
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Question 37 Topic 2.3 · Apply it
The number of members in a club increased from 40 to 58. By what percent did the number of members increase?
A 18% B 31% C 45% D 145%
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Question 38 Topic 2.4 · Concept check
A right triangle has legs of length 9 and 12. What is the perimeter of the triangle?
A 21 B 36 C 54 D 108
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Question 39 Topic 2.4 · Apply it
A circle in the xy-plane has equation x2 + y2 − 6x + 4y − 12 = 0. What is the radius of the circle?
A 5 B 2√3 C 12 D 25
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Question 40 Topic 2.4 · Concept check
In right triangle ABC, angle C is the right angle and sin A = 5/13. What is tan A?
A 12/13 B 13/5 C 5/12 D 12/5
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Question 41 Topic 2.4 · Apply it
Triangle DEF is similar to triangle ABC, with DE corresponding to AB. If AB = 6, DE = 15 and the area of triangle ABC is 20, what is the area of triangle DEF?
A 125 B 35 C 50 D 300
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Question 42 Topic 2.4 · Concept check
A circle has radius 9. What is the area of a sector of the circle with a central angle of 120°?
A 6π B 9π C 81π D 27π
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Question 43 Topic 2.4 · Concept check
A right circular cone has radius 3 and height 8. What is its volume?
A 8π B 24π C 72π D 96π
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Question 44 Topic 2.4 · Apply it
Two parallel lines are cut by a transversal. Two same-side interior angles measure (3x + 10)° and (2x + 20)°. What is the measure of the larger angle?
A 40° B 80° C 90° D 100°
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