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which of the following word problems can be solved using the inequality 9x+18>72, select two that apply A. Kelly already had $18 and will make $9 per hour mowing lawns how many hours X Miskelly work to save at least 72 B. a plant is currently 18 mm tall the plant grows at a rate of 9 mm every week how many weeks X will it take the plant to become taller than 72 mm C. Mackenzie plans on running more than 72 miles she has already ran a 18 miles and we'll run the same number of miles each day for the nine days how many miles X must she run each day in order to meet her goals

User MrRobboto
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1 Answer

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Given inequality : 9x + 18 > 72

A) A. Kelly already had $18 and will make $9 per hour mowing lawns how many hours X Miskelly work to save at least 72

Amount Kelly had + Amount she make in x hours = atleast to save 72

18 + 9x > 72

B) a plant is currently 18 mm tall the plant grows at a rate of 9 mm every week how many weeks X will it take the plant to become taller than 72 mm

Intial height of the plant + Hieght of the tree increase in x weeks = taller than 72mm

18 + 9x > 72

C) Mackenzie plans on running more than 72 miles she has already ran a 18 miles and we'll run the same number of miles each day for the nine days how many miles X must she run each day in order to meet her goals​

Initial distance she cover + Distance travel in 9 days to meet the goal of 72

18 + 9x ≥ 72

Answer :

A) A. Kelly already had $18 and will make $9 per hour mowing lawns how many hours X Miskelly work to save at least 72

B) a plant is currently 18 mm tall the plant grows at a rate of 9 mm every week how many weeks X will it take the plant to become taller than 72 mm

User Platinor
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7.1k points
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