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 (# in years) 1 2 3 4
f(t) ($ in dollars) 65 84.5 109.85 142.81
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Dude, I am sorry but I suck at math. I failed it 2 times in a row,
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oh no. thanks anyway.
@Luigi0210 , @phi
Could someone please help me?
I suspect the function should be written:
\(f(x) = 72(1.25)^x\)
Whenever there is an exponent, write the ^ sign before it so helpers know that the number is exponentiated and not multiplied.
It is perfectly ok to write f(x) = 72(1.25)^x which means the same function.