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 B: The table below shows the price f(t), in dollars, of product B after t years:
t (number of years)
1 2 3 4
f(t) (price in dollars)
65 84.5 109.85 142.81

Question

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 B: The table below shows the price f(t), in dollars, of product B after t years:
t (number of years)
1 2 3 4 
f(t) (price in dollars)
65 84.5 109.85 142.81

anonymous · Answer

Which product recorded a greater percentage change in price over the previous year? Justify your answer. (5 points)

anonymous · Answer

I already got part A

anonymous · Answer

@peachpi

anonymous · Answer

please just tell me which is greater and why. im about to leave and I really got to finish this test now! pleeeeaaaseee!!! @peachpi

anonymous · Answer

I don't know the answer. I was just trying to figure it out, but I'm definitely not going to spend my time on it if you're not interested in spending yours