A river is rising at a rate of 3 inches per hour. If the river rises more than 2 feet, it will excee

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A river is rising at a rate of 3 inches per hour. If the river rises more than 2 feet, it will exceed flood stage. How long can the river rise at this rate without exceeding flood stage?

Let the number of inches be i. Remember 12 inches to a foot, so we have 2 feet = 12*2 = 24 inches.

• Inequality: 3i <= 24. (since more than means the river can go up to 2 feet or 24 inches

To solve the inequality for I, we type it in our search engine and we get:
I <= 8

This means after 8 hours, the river will flood