CWA-PTA_97_03 - − 10 y 25 17 18 4 x 2 − 1 2 x 2 3 x 2...

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PRETESTS AND ANSWERS
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CALCULUS WITH APPLICATIONS Name: Pretest, Form A 1. Evaluate the expression x 2 +3 y z 3 when x = 2 , y =3 , and z = 1 . 1. Perform the indicated operations. 2. ( 2 x 2 3 x +7 ) ( 5 x 2 8 x 9 ) 2. 3. ( y 4) 2 3. 4. (2 x 1) ( x 2 +3 x 4 ) 4. 5. (5 a +2 b )(5 a 2 b ) 5. Factor each polynomial completely. 6. 3 x 2 y 3 6 x 3 y 2 +15 x 2 y 2 6. 7. 2 ac 3 ad +8 bc 12 bd 7. Solve each equation. 8. 6( x 1) 4(2 x +8)=2 5( x +2) 8. 9. 1 4 x 7= 2 x 3 + 1 2 9. 10. x 1 5 = 3 2 x 4 10. 11. ( x 2) ( x +1)=4 11. 12. Solve the inequality 6 x 8( x +2) 5 ( x + 14) . Write your answer in interval notation. 12. 13. Solve the equation 2 x +4 y = ay bx for y. 13. 14. Solve the equation 5 a + c 2 b = 7 3 a for a. 14. 15. Solve the following system of equations. 3 x 2 y = 12 4 x +5 y = 23 15. 3
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4 CALCULUS WITH APPLICATIONS Pretest, Form A Perform the indicated operation. Write answers in lowest terms. 16. 18 a 2 b 2 27 xy 3 · 10 xy 2 8 ab 2 16. 17. 2 x +8 3 y 15 ÷ x 2 +7 x +12 y 2
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Unformatted text preview: − 10 y + 25 17. 18. 4 x 2 − 1 + 2 x 2 + 3 x + 2 18. Simplify each expression. Write answers with only positive exponents. 19. ( 2 x 2 y − 3 ) − 3 19. 20. 6 x − 2 y 5 15 x 4 y − 2 20. Simplify each radical. Assume all variables represent nonnegative real numbers. 21. ± 72 x 3 y 4 21. 22. 3 ± 72 x 3 y 4 22. Write an equation in the form ax + by = c for each line. 23. The line through the points with coordinates ( − 3 , − 14) and (5 , 2) 23. 24. The line through the points with coordinates (3 , − 7) and (3 , 5) 24. 25. Graph the solution of the inequality 2 x − 3 y ≤ 12 . 25....
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This note was uploaded on 10/07/2010 for the course CALC 2302 taught by Professor Yuly during the Fall '08 term at University of Texas at Dallas, Richardson.

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CWA-PTA_97_03 - − 10 y 25 17 18 4 x 2 − 1 2 x 2 3 x 2...

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