Conrad Villegas

Mathematics

30 July, 12:08

The number of bacteria (b) in a batch of refrigerated food is given by the function b (t) = 20t2 - 70t + 300, where t is the temperature of the food in degrees Fahrenheit. The function t (h) = 2h + 3 gives the temperature of the food h hours after it is removed from refrigeration. Which expression correctly represents the number of bacteria (b) in the food as a function of the number of hours (h) the food is unrefrigerated? 80h2 + 100h + 690

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