The function f(x) shows how much Kate pays for the data service for downloading x songs in a month. So f(14) will represent the amount that Kate will have to pay for downloading 14 songs in a month.
f(x) = 2.50x + 11.50
Replacing x by 14, we get:
f(14) = 2.50(14) + 11.50 = 46.5
Thus, Kate will have to pay $ 46.5 for downloading 14 songs in a month
To solve this problem you must apply the proccedure shown below: 1. You have the function f(x) = 2.50x + 11.50 where f(x) <span>relates how much Kate pays for data service and x is the number of songs.
