20. Suppose you select a number at random from the sample space {1, 2, 3, 4, 5, 6, 7, 8, 9}. Find the theoretical probability P(a number that is a multiple of 3). A.1/9 B.2/9 C.1/3 D.5/9

____ 21. A truck rental company purchased a used truck for $20,000. It plans to rent the truck for $100 a day. Which equation would describe how the profit, y, on the truck is related to the number of days, x, that the truck earns income? A. y = 100x B. y = 100x + 20,000 C. y = 100x - 20,000 D. y = 20,000x - 100

____ 22. Solve this equation 9z - 8 = 5z - 4. A. z = 1 B. z = 3 C. z = 5 D.x=6/7

____ 23. Suppose you select a number at random from the sample space {5, 6, 7, 8, 9, 10, 11, 12, 13}. Find the theoretical probability P(a number that is an even number). A.4/9 B.5/9 C.2/3 D.8/9

____ 24. Write the equation after the given transformation of the equation f(x) = |x|. Translation of 4 units left, 3 units up and a stretch of 2. A. f(x) = 2|x + 4| - 3 B. f(x) = 2|x - 4| - 3 C. f(x) = 2|x - 4| + 3 D. f(x) = 2|x + 4| + 3

____ 25. Suppose y varies directly with x. If x is 7 when y is 3, what is x when y is 5? A.11 2/3 B. 4 1/5 C.4 1/5 D. 11 2/3

____ 26. Find the slope and y-intercept of this equation y = 5. A. m = 0, y = 5 B. m = 0, y = 5 C. m = 5, y = 5 D. m = 5, y = 0

____ 27. What is the reciprocal of the number ? A. -11/5 B. -5/11 C. 5/11 D. 11/5

____ 28. Compare these two numbers: _____ 3. A. < B. > C. = D.

____ 29. Which translation takes y = |x + 2| - 1 to y = |x| - 4. A. 2 units right, 3 units down B. 2 units left, 3 units up C. 2 units right, 3 units up D. 2 units left, 3 units down

____ 30. Solve this equation 5x = 6x + 33. A. x = 33 B. x = 33 C. x = 3 D. x = 3

____ 31. Solve this equation 2(4x + 1) = 3(2 + 4x). A. 5 B. -5 C. 1 D. -1

____ 32. Which relation is not a function? A. {(0, 9), (2, 3), (0, 2), (4, 1)} B. {(3, 2), (4, 1), (0, 9), (3, 3)} C. {0, 3), (2, 3), (3, 3), (4, 3)} D. {(0, 3), (3, 2), (2, 4), (4, 6)}

____ 33. Find the domain of the relation {(3, 9), (5, 2), (6, 1), (7, 0)}. A. {3, 5, 6, 7} B. {9, 2, 1, 0} C. {3, 9, 5, 2} D. {6, 1, 7, 0}

____ 34. Suppose you select a number at random from the sample space {1, 2, 3, 4, 5, 6, 7, 8, 9}. Find the theoretical probability P(a number that is greater than 6). A. 4/9 B. 1/3 C. 2/3 D. 1