A pair of​ women's running shoes cost ​$125 in 2008 and the same shoes cost ​$140 in 2012 due to inflation.   a. Develop an exponential model to describe the rate of inflation over this time period. form: y=125(___)x^2   b. If inflation continues at the same​ rate, use your model in part​ (a) to estimate the price of the shoes in 2018.

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