2 years ago

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

1 answer:

4 0

4(x + 15) > = 120
4x + 60 > = 120
4x > = 120 - 60
4x > = 60
x > = 60/4
x > = 15...........so ur answer is 15 or more

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