Yonopolly
19. What is the solution set for -4x + 10 ≥ 5x + 55?
A. x ≥ 5 B. x ≥ 45 C. x ≤ -5 D. x ≤ -45
18. Two customers went to a post office to buy postcards & large envelopes. Each postcard costs the same amount, & each large envelope costs the same amount. The first customer paid $12 for 14 postcards & 5 large envelopes. The second customer paid $24.80 for 10 postcards & 15 large envelopes. What was the cost in dollars of each large envelope?
A. $1.42 B. $0.35 C. $1.15 D. $0.63
2. Which expression is equivalent to x^2 - 17x - 60?
A. (x - 20)(x + 3) B. (x - 5)(x - 12) C. (x - 20)(x - 3) D. (x + 5)(x - 12)
12.What is the slope of the line that passes through the points (5, -11) & (-9, 17)?
A. -2 B. -1/2 C. 7 D. 2
6. Which expression is equivalent to (h^2 + 9h -1)(-4h + 3)?
A. -4h^3 - 33h^2 + 31h - 3 B. 4h^3 + 39h^2 - 23h - 3 C. -4h^3 - 39h^2 + 23h + 3 D. 4h^3 + 33h^2 - 31h + 3
13. What are the solutions to (x + 7)^2 = 81?
A. -74 & 88 B. -2 & 16 C. -88 & 74 D. -16 & 2
10. The cost of hiring a plumber , "y", to work "x" hours on a repair project can be modeled using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of $45 per hour. The plumber works a maximum of 8 hours a day. For one day of work, what is the range of the function for this situation?
A. 0≤ x ≤ 8 B. 80 ≤ y ≤ 440 C. 0 ≤ x 10 D. 45 ≤ y ≤ 685
14. Given f(x) = 1/3(4 - x)^2, what is the value of f(16)?
A. 100 B. 48 C. 59 D. 96
15. Which expression os equivalent to (144k^2 r^14)^1/2?
A. 12kr^7 B. 72k^2 r^14 C. 144kr^7 D. 12k^2 r^14
16. What value on "n" makes the equation 4(0.5n - 3) = n - 0.25(12 - 8n) true)
A. 3 B. -9 C. 0 D. -15
17. The value of "y" varies directly with "x". If x = 3, then y = 21. What is the value of x when y = 105
A. 3/5 B. 1 2/3 C. 7 D. 15
8. Which expression is a factor of 9r^2 - 4r + 1?
A. 3r - 1 B. r - 1 C. 9r - 1 D. There are no real factors.
5. Which expression is a factor of 21x^2 + 13x - 20?
A. 3x - 4 B. 7x - 5 C. 7x + 4 D. 3x + 5
1. Which expression is equivalent to -28x^2 + 35x?
A. 7x(7x + 5) B. -7x(4x - 5) C. 7x(4x - 5) D. -7x(4x + 5)
20. What is the solution set to 34x + 95 = 3(14x + 9)?
A. 8.5 B. 9 C. 5 D. 3.7
11. The graph of g(x) = x^2 was transformed to create the graph h(x) = -(x/4)^2. which of these describes the transformation from the graph of "g" to create the graph of "h"?
A. A reflection over the x-axis and a horizontal stretch B. A reflection over the y-axis and a horizontal stretch C. A reflection over the x-axis and a vertical stretch D. A reflection over the y-axis and a vertical stretch
9. scientists are studying a bacteria sample. The function f(x) = 245(1.12)^x gives the number of bacteria in the sample at the end of "x" days. Which statement is the best interpretation of one of the values in the function?
A. The initial number of bacteria is 12. B. The initial of bacteria decreases at a rate of 88% each day. C. The number of bacteria increases at a rate of 12% each day. D. The number of bacteria at the end of one day is 245.
4. Which function is equivalent to f(x) = -4(x + 7)^2 - 6?
A. f(x) = -4x^2 - 56x - 202 B. f(x) = -4x^2 + 14x + 43 C. f(x) = -4x^2 - 65x - 172 D. f(x) = -4x^2 + 190
3. There are 1,024 players in a tennis tournament. In each round, half the players are eliminated. Which function can be used to find the number of players remaining in the tournament after "x" rounds?
A. f(x) = 1,024(1.50)^x B. f(x) = 1,024(0.50)^x C. f(x) = 1,024(1.05)^x D. f(x) = 1,024(0.05)^x
7. What is the equation in slope-intercept form of the line that passes through the point (2, -2) & is perpendicular to the line represented by y = 2/5x + 2?
A. y = 5/2x - 7 B. y = 5/2x + 7 C. y = -5/2x - 3 D. y = -5/2x + 3
