Question

the light bulbs you use are on sale. but you only get the lower price if you buy 3 packsages of bulbs. you want to know how much you'll save. write a formula that will help you determine how much you'll save by buying 3 packages on sale. s=sale price per package r=regular price per package c=cost saving

Answer 1

(R*3)-(S*3)=C
The regular price of 3 light bulbs minus the sale price of 3 lightbulbs equal the amount you will save on 3 lights