A company charges $7 for a T-Shirt and ships and order for $22. A school principal ordered a number

A company charges $7 for a T-Shirt and ships and order for $22. A school principal ordered a number of T-shirts for the school store. The total cost of the order was $1,520. Which equation can be used to find the number one f shirts ordered?

Set up the cost equation C(f) where f is the number of shirts:
C(f) = Cost per shirt * f + Shipping

We're given C(f) = 1520, Shipping = 22, and cost per shirt is 7, so we have:
7f + 22 = 1520

To solve for f, we type this equation in our search engine and we get:
f = 214