msw5805 msw5805

02-02-2017
Mathematics

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Four times the sum of a number and 15 is at least 120. Let x represent the number. Find all possible values for x.
Mathematics

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wolffiegirl wolffiegirl

02-02-2017

4(x+15)≥120⇔4x+60≥120If we solve for x, we find that x≥15

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