You receive an 18% discount on a purchase that would have normally cost $350.00. how much did you spend on the purchase before tax?

It will cost $287.00 and you will save 63 dollars.

18% Discount on a purchase of $350.00

Convert the percent to a decimal: 0.18

Do your multiplying:
0.18 × 350.00

Get the 63

So since $63 is the amount you get off, you would do 350-63 so the final purchase money would be $287.00