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08-12-2016
Mathematics

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Tim earns $120 plus $30 for each lawn he mows. Write an inequality to represent how many lawns he needs to mow to make more than $310.

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klaudiakotwica klaudiakotwica

08-12-2016

a - number of lawn that Tim needs to mow
310 < 120 + 30a
190 < 30a
6.333 < a
a > 6.333

Tim needs to mow at least 7 lawns in order to earn more than $310

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