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ACC Module #2 Quiz #3 Key

ACC Module #2 Quiz #3 Key

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ACC Module #2 Quiz #3 Key

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  1. ACCUPLACER Module #2 - QAS Quiz #3 Key 1

  2. Module #2 Quiz #3 1. C: The correct solution is 6. x NAME: _____KEY_________________ Subtract 5 from both sides of the equation. 3 2 x = 6 2. D: The correct solution is 9 Multiply both sides of the equation by 2. . 2 5x - 3 = 3x + 6 2x - 3 = 6 2x = 9 9 2 Combine like terms on the left and right sides. Subtract 3x from both sides of the equation. Add 3 to both sides of the equation. Divide both sides of the equation by 2. 3. D: The correct solution is (-9, 5). -6x - 2y = 44 -8x = 72 x = -9 3(-9) + y = -22 -27 + y = -22 y = 5 4. C: The correct graph has the two lines intersect at (-9, -1). 5. B: The correct solution is B because the number of students for each grade is correct. 6. A: The correct solution is 14.07. The sum of the scores is 68.8, and the average is 14.07 for the 12 scores. 7. C: The correct solution is 4x2 - x - 7. (8x2 - 6x - 3)-(4x2 -5x + 4) = (8x2 - 6x -3) + (-4x2+ 5x - 4) = (8x2 - 4x2) + (-6x + 5x) + (-3-4) = 4x2 - x -7. Multiply all terms in the second equation by -2. Add the equations. Divide both sides of the equation by 8. Substitute -9 in the second equation for x. Simplify using order of operations. Add 27 to both sides of the equation. 2

  3. 8. B: The correct solution is (3x - 5)2. The expression 9x2 - 30x + 25 is rewritten as (3x - 5)2 because a is 3x and the value of b is 5. 9. D: The correct solution is 16x6 because (4x3)2 = 42x3x2 = 16x6. 10. D: The correct solution is 6 because the landmass of the United States is about 4,000,000 square miles and the landmass of Alaska is about 700,000 square miles. So, the United States is about 6 times larger. 11. C: The correct solution is studies with a limited amount of time because this is a non-random process. 12. B: The correct solution is attendance every day because data is collected from every class every day. 13. D: The correct solution is 2. 5 a total of 0 balls. The probability is 3 20 20 14. A: The correct solution is $1.4 million. The expected value is 1 3 1 (3 ) (1 ) ( 2 ) 1.5 0.3 0.4 2 10 5 There are 3 orange balls and 5 white balls out of 5 8 20 2. 5           1.4 m m m m m m m 3

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