Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows the minimum number of hours, n, that Annie should work as a babysitter to earn enough to buy the coat?

12 + 6n ≤ 30, so n ≤ 3

12 + 6n ≥ 30, so n ≥ 3

6n ≥ 30 + 12, so n ≥ 7

6n ≤ 30 + 12, so n ≤ 7

Question

Danny Erickson

Mathematics

11 August, 03:08

Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows the minimum number of hours, n, that Annie should work as a babysitter to earn enough to buy the coat?

12 + 6n ≤ 30, so n ≤ 3

12 + 6n ≥ 30, so n ≥ 3

6n ≥ 30 + 12, so n ≥ 7

6n ≤ 30 + 12, so n ≤ 7

+1

Answers (1)

Know the Answer?

Tiana Miranda · Answer 1

Annie's total earnings from her initial savings, $12, and from babysitting should be equal or more than 30. Annie's total earnings from babysitting may be expressed as $6n. The inequality should be,

12 + 6n ≥ 30

Solving for x,

6n ≥ 30 - 12

6n ≥ 18; n ≥ 3

Thus, the answer is the second among the choices.