SOLUTION: I need help with this question please. The price of gas, which started at $2.25 per gallon, increased at a rate of 4% per year. Write the function that models the situation, sub

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Question 1137474: I need help with this question please.
The price of gas, which started at $2.25 per gallon, increased at a rate of 4% per year.
Write the function that models the situation, substituting numerical values for A and r into the expression. Do not use the dollar symbol in the function.
f(x) = A(1+r)^x

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+A+ is the amount you start with
+r+ is the rate of increase per year
+x+ is the time in years
+f%28x%29+=+2.25%2A%28+1+%2B+.04+%29%5Ex+
+f%28x%29+ will be in units of dollars