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14-11-2017
Mathematics

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David charges $15 plus $5.50 per hour to mow lawns. Ari charges $12 plus $6.25 per hour to mow lawns. In what situations is Ari's charge greater than or equal to David's charge?

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14-11-2017

the answer would be 15+$5.50(9)=$64.50 is less than $12+$6.25(10)= 74.50

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