Definite Integrals, Average Value (Homework) In a certain city the temperature (in °F) t hours after 9 AM was modeled by the function T(t) = 59 − 2.8t + 0.43t2 − 0.018t3. Find the average temperature during the period from 9 AM to 9 PM.(Round your answer to one decimal place.)

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A: Apologies for the inconvenience.   We graph the given equations using graphing calculator.

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