Lucy needs $40 to buy a large box of chocolate. She has saved $12 and plans to work as a babysitter to earn $7 per hour. Which inequality shows the minimum number of hours, n, that Lucy should work as a babysitter to earn enough to buy the large box of chocolate? a. 12 + 7n ≤ 40, so n ≤ 4 b. 7n ≤ 40 + 12, so n ≤ 7.4 c. 12 + 7n ≥ 40, so n ≥ 4 d. 7n ≥ 40 + 12, so n ≥ 7.4
Lucy needs $40 to buy a large box of chocolate. She has saved $12 and plans to work as a babysitter to earn $7 per hour. Which inequality shows the minimum number of hours, n, that Lucy should work as a babysitter to earn enough to buy the large box of chocolate? a. 12 + 7n ≤ 40, so n ≤ 4 b. 7n ≤ 40 + 12, so n ≤ 7.4 c. 12 + 7n ≥ 40, so n ≥ 4 d. 7n ≥ 40 + 12, so n ≥ 7.4
Chapter3: Graphs And Functions
Section3.4: Graph Linear Inequalities In Two Variables
Problem 278E: Elena needs to earn at least $450 a week during her summer break to pay for college. She works two...
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Lucy needs $40 to buy a large box of chocolate. She has saved $12 and plans to work as a babysitter to earn $7 per hour. Which inequality shows the minimum number of hours, n, that Lucy should work as a babysitter to earn enough to buy the large box of chocolate?
a. 12 + 7n ≤ 40, so n ≤ 4
b. 7n ≤ 40 + 12, so n ≤ 7.4
c. 12 + 7n ≥ 40, so n ≥ 4
d. 7n ≥ 40 + 12, so n ≥ 7.4
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