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Unformatted text preview: Section 4.1 1) The revenue of a tire manufacturer can be modeled by S(x) = 22.982(1.137) x thousand dollars x years after 1966. a) How much did revenue change from 1980 to 1981? b) Use a derivative to approximate the change in part a . 2) The amount in an investment after t years is given by A( t ) = 5000(1.057) t dollars a) Give the rateofchange formula for the amount. b) Find the rate of change of the amount after 8 years. Write a sentence interpreting the answer. c) On the basis of your answer to part b , determine by approximately how much the investment will grow during the first half of the 9 th year. Year 1998 1999 2000 2001 2002 Price 37,782 38, 331 38, 904 39,440 39,954 Year 1996 1997 1998 1999 2000 2001 2002 Cars 131 122 109 106 108 118 129...
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 Fall '08
 Royer
 Calculus

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