Biology The number N of bacteria in a refrigerated food is given by N T = 10 T 2 − 20 T + 600 , 2 ≤ T ≤ 20 where T is the temperature of the food in degrees Celsius . When the food is removed from refrigeration, the temperature of the food is given by T t = 3 t + 2 , 0 ≤ t ≤ 6 where t is the time in hours . (a) Find and interpret N ∘ T t . (b) Find the bacteria count after 0.5 hour. (c) Find the time when the bacteria count reaches 1500.
Biology The number N of bacteria in a refrigerated food is given by N T = 10 T 2 − 20 T + 600 , 2 ≤ T ≤ 20 where T is the temperature of the food in degrees Celsius . When the food is removed from refrigeration, the temperature of the food is given by T t = 3 t + 2 , 0 ≤ t ≤ 6 where t is the time in hours . (a) Find and interpret N ∘ T t . (b) Find the bacteria count after 0.5 hour. (c) Find the time when the bacteria count reaches 1500.
Solution Summary: The author explains how to calculate the function (Ncirc T) — the number of bacteria in food as a function of time.
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