The Temperature of Water in a Certain Lake on a Day

question 72

Multiple Choice

The temperature of water in a certain lake on a day in October can be determined by using the model y = 15.2 - 0.537x where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the Water 10 degrees? (Round to the nearest foot.)

• A)28 feet
• B)66 feet
• C)47 feet
• D)10 feet

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Definitions:

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