Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model  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 8 degrees? (Round to the nearest foot.)

A. 43 ft
B. 32 ft
C. 13 ft
D. 69 ft


Answer: C

Mathematics

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A. (4, ?)


B. (-9, 4)


C. (-?, -9) or (4, ?)


D. (-?, -9)


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A. -72 B. 72 C. -95 D. -76

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A. a =  
B. a = 
C. a =  
D. a =  

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