MATH D R1

# MATH D R1 - Math D / Test # 1 Review Erika Noffsinger /...

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Math D / Test # 1 Review Erika Noffsinger / Fall 2009 1. Simplify each expression: a) 8 2 36 3 2 4 (- 7) b) 2. Solve the following equations: a) 2x 4(5x + 1) = 3x + 17 b) c) (2x 3)2 3(x + 1) = (x 2)4 3(x + 5) d) 7x + 13 = 4x 10 + 3x + 23 e) 3. Solve T = gr + gvt for g 4. Solve C = for F 5. You are choosing between two long-distance telephone plans. One plan has a monthly fee of \$15 with a charge of \$0.05 per minute. The other plan has a monthly fee of \$5 with a charge of \$0.07 per minute. a) For how many minutes of long-distance calls will the costs for the two plans be the same? b) What is the cost of each plan when the plans are equal? 6. Simplify each exponential expression: a) (5x 2 y 4 ) 3 b) c) d) (Assume that all variables used as exponents represent integers and that all other variables represent nonzero real numbers. 7. Perform the following operation and write (4 x 10 4 )(4 x 10 2 ) in scientific notation. 8. Perform the following operation and write

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9. You bought a new car for \$13,805. Its value is decreasing by \$1820 per year. a) Find the equation that represents the price of the car x years after you bought the car. b)
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## This note was uploaded on 01/07/2010 for the course MATH 1 taught by Professor Staff during the Spring '08 term at UC Davis.

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MATH D R1 - Math D / Test # 1 Review Erika Noffsinger /...

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