A car leaving a stop sign accelerates constantly from a speed of 0 feet per second to reach a speed of 44 feet per second. The distance of the car from the stop sign, d, in feet, at time t, in seconds, can be found using the equation d=1.1t2.
What is the average speed of the car, in feet per second, between t=2 and t=5?
5.5
6.6
7.7
8.5