11.) A manager at a jewelry store buys jewelry at a whole sale cost of "x" . To set a price on the item in the store she first adds $25 and she calls this function "a(x)" . Then, she increases by 80% and calls this combined price increase "p(a(x))" . Create a function model that expresses the overall increase in price.
a(x) = x + 25
pa(x) = (x + 25) (1.80) = 1.80x + 45
The overall increase in price [above cost ] =
pa(x) - x =
1.80x + 45 - x =
.80x + 45
I like how you solved the equation but from what it looks like I'm just confused because it first said "a(x) and then it said "p(a(x))" . What equation are you referring to CPhill?