Question

You are trying to figure out how to spend your summer. You have two options for jobs. Babysitting (b) pays $12 an hour and cleaning houses (c) pays $15 an hour. You would like to make sure you make at least $420 per week. If you work 32 hours cleaning, how many hours do you need to work babysitting to get $420 for the week? If you work 10 hours babysitting, how many hours do you need to work (at least) cleaning houses to reach your goal?

Answer 1

need

Explanation:

Answer 2

Answer: 0 hours babysitting, 20 hours cleaning

Explanation:

Babysitting equation: 12b

Cleaning houses equation: 15c

What you would like to make: (b or c) = at least 420

15(32) = $480, so you would not need to babysit that week since it is more than $420.

12(10) = 120

15c + 120 = 420

15c = 300

c = 20 hours of cleaning to reach your goal.