Gavin needs $80 to buy a fish tank. He has saved $8 and plans to work as a babysitter to earn $9 per hour. Which inequality shows the minimum number of hours, n, that Gavin should work as a babysitter to earn enough to buy the fish tank? 8 + 9n ≥ 80, so n ≥ 8 8 + 9n ≤ 80, so n ≤ 8 9n ≥ 80 + 8, so n ≥ 9.8 9n ≤ 80 + 8, so n ≤ 9.8

ANSWERS

2016-09-29 16:35:15

8 + 9n≥80Saved $8, works $9 an hour, has to be greater or equal to $80 in order to make enough money.

2016-09-29 16:36:30

So it will be 8 + 9n ≥ 80

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