The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function below: f(x) = 72(1.25)x Part A: Is the price of product A increasing or decreasing and by what percentage per year? Justify your answer. (5 points)
Part A f(x) = 72(1.25)x Okay, we know that it is an increase because 72 * 1.25 is 90. difference is 18, so we divide 18 by 72 and multiply by 100. The percent increase is 25%.