The price of products may increase due to inflation and decrease due to depreciation. Marco 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 vear? Justify your answer. (5 points)

Part B: The table below shows the price f(t), in dollars, of product B after t years.
(I have included a picture of the table.)
Which product recorded a greater percentage change in price over the previous year? Justify your answer.