Michael earns a base pay of $500 per month plus 6% commission on his sales. What is Michael's total monthly earnings if he sells $4,000 worth of merchandise?

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75

3 hours and 15 minutes

hope this : )