Dan's dog-walking job pays $15 per hour. His job as a car-wash attendant pays $400 each week. Dan wants to know how many hours he needs to spend walking dogs to earn more than $520 in a week. Which three inequalities can model this situation? Select all the correct answers. x (15 + 400) > 520 520 120 15x + 520 > 400 520 520

an needs to walk dogs for at least 9 hours in order to earn more than $520 a week.

Step-by-step explanation:

Since his car wash attendant job pays $400 a week then you can subtract that from your final revenue.

$520-$400=$120

Now, to find out how many hours he has to walk dogs for in order to earn more than $520, you need to know some basic multiplication so ...

$15*8=$120

... but he needs to earn MORE than $520 so ...

$15*9=$135

$400+$135=$535.