A car drives down a road in such a way that its velocity (in m/sec) at time t (in sec) is v(t) = t1/2 + 3 Find the car's average velocity (in m/sec) between t = 3 and t = 9. Answer =In a certain city the temperature (in degrees Fahrenheit) t hours after Sam was approximated by the function T(t) = 50 + 155:]: (g) Determine the temperature at 9 am. Determine the temperature at 3 pm. Find the average temperature during the period from 9 am to 9 pm. C] The linear density in a rod 8 meters long is 12/va + 1 kg/m, where a is measured in meters from one end of the rod. Find the average density (in kg/m) of the rod. Average density = kg/m