Department of Mathematics webwork/mth 103 ss18,86820/hwO5 linear function / 15 H

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Department of Mathematics webwork/mth 103 ss18,86820/hwO5 linear function / 15 Hw05 Linear Function Representations: Problem 15 Previous Problem List Next ,about 15 lb/. (1 point) At the surface of the ocean, the water pressure is the same as the air pressure above the water Below the surface the water pressure increases by about 4.64 lb/in2 tor every 10 ft of descent Write a function f(z) which expresses the water pressure in pounds per square inch as a function of the depth in inches below the ocean surface. f(x) = t what depth is the pressure 80 lb/in2 Include the units in your answer Note: You can earn partial credit on this probiem. Preview My Answers Submit Answers Show me another You have attempted this problem 0 times. You have 12 attempts remaining. P10 F10 F8 F9

Explanation / Answer

slope m = 4.64 lb / in^2 for every 10 feet descent

4.64 lb / in^2 for every 120 inches descent

slope m = 4.64 / 120 = 0.03867

so, function f(x) = 0.03867 x + 15

b) plugging f(x) = 80

80 = 0.03867 x + 15

x = 1680.89

x = 140 feet

depth is 140 feet

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