If 15% of the customer's total is $22.05, then the customer's total is "

let's say is "x", so "x" is then 100% of the whole bill.

we know 15% is 22.05, what is "x"?

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)