Question

A store is having a sale with 10% off everything

Write an equation to show the ale price s of any item given its regular price r

Answer 1

Explanation:

Since the sale price is always less than the original, we take the original and subtract from it the percent off to give us the sale price. Putting that into equation form:

s = r - .10r

which says, in words, that the sale price is equal to the regular price minus 10% of the regular price.