Model the function to get the temperature.

Researcher models the temperature T (in degree C) during the time period from 6 am to 6 pm in a certain northern city by the function



where t is the number of hours after 6 am. Answer the following 2 items:

1. What is the average temperature in the city during the workday, from 8 am to 5 pm?
2. At what time (or times) during the workday is the temperature in the city the same as the average temperature found in part 1. ?