What does f −1 represent?

Algebra
Tutor: None Selected Time limit: 1 Day

Marcello's Pizza charges a base price of $8 for a large pizza plus $4 for each topping. Thus, if you order a large pizza with x toppings, the price of your pizza is given by the function 
f(x) = 8 + 4x.
 Find 
f−1.
 
f−1 = 

 What does 

f−1
 represent? 
Mar 1st, 2015

it is (x-8)/4 it represents number of toppings thanks please rate me as best please

Mar 1st, 2015

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