Using a rain gauge, Gerry determined that
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For this case we must resolve the following inequality:
To do this we follow the steps below:
Subtracting 3 from both sides of the inequality:
Dividing by 3 to both sides of the inequality:
We multiply by -1 on both sides taking into account that the sense of inequality changes:
Thus, the solution is given by all values of x greater than -1.
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