Jenny makes $4 an hour for babysitting and $7 an hour for tutoring math.Jenny’s parents do not want her to work more than 20 hou

Question

8090 [49]

4 years ago

12

Jenny makes $4 an hour for babysitting and $7 an hour for tutoring math.Jenny’s parents do not want her to work more than 20 hou

rs per week.Jenny would like to earn $110 a week.Which of these possibilities would be a solution to her dilemma?

Mathematics

1 answer:

Leokris [45] · Answer 1 · 2021-11-28T20:50:10+03:00

Leokris [45]4 years ago

8 0

Jenny babysits for 10 hours and tutors for 10 hours.

4x+7y=110
x+y=20

4x+7y=110
-4(x+y)=(20)-4

4x+7y=110
-4x-4y=-80

3y=30
— —
3 3

y=10hours of tutoring

20hours-10hours=10hours of babysitting