# Kayla earns a weekly salary of $290 plus a 5.5% commission on sales at a gift shop. How much would she make in a week if she sold $5700 worth of merchandise?

##### 1 Answer

Jan 12, 2017

Kayla would make $603.50

#### Explanation:

A formula for what Kayla earns can be written as:

Where:

"Percent" or "%" means "out of 100" or "per 100", Therefore 5.5% can be written as

When dealing with percents the word "of" means "times" or "to multiply".

Substituting gives:

We can now calculate