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16-09-2016
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

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16-09-2016

4x + 15 >= 120
4x + 15 - 15 = 120 - 15
4x = 105
4x/4 = 105/4
x = 26.25
Answer is x >= 26.25

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