Question

Dan’s dog-walking job pays $15 per hour. His job as a car-wash attendant pays $400 each week. Dan wants to know many hours he needs to spend walking dogs to earn more than $520 in week

Answer 1

At least 9 hours.

Step-by-step explanation:

Dan already has $400 from the car-wash

So our equation is

400 + 15x > 520

X = hours of dog walking

First, you need to isolate 15x

So

400 + 15x > 520

-400 -400

15x > 120

Then you divide both sides by 15, so

X > 8

Dan has to work at least 9 hours of dog walking to get more than 520