SOLUTION: Suppose the price of a first-class stamp was 4¢ for the first time in 1958 and 44¢ in 2009. Find a simple exponential function of the form
y = ab^t that models the cost of a fi
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Question 1148044: Suppose the price of a first-class stamp was 4¢ for the first time in 1958 and 44¢ in 2009. Find a simple exponential function of the form
y = ab^t that models the cost of a first-class stamp for 1958 - 2009. (Let
t = 0 correspond to 1958. Assume y is in dollars. Round your value for b to four decimal places.)
y=???
Also how would i predict tha value for 2020?
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
Year 1958 is t=0; so year 2009 is t=51.
The price in 1958 (t=0) was .04 dollars (4 cents):
The price in 2009 (t=51) was .44 dollars (44 cents):
The rest I leave to you....
(1) Use a calculator to evaluate b
(2) Form your equation y = ab^t
(3) Check your answer by verifying that ab^51 to the nearest cent is 44 cents
(4) For year 2020 (t=62), evaluate ab^62
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