A car is driving away from a crosswalk. The formula d – a t2 + 2t expresses the car's distance from the crosswalk in feet, d, in terms of the number of seconds, t, since the car started moving. a. Suppose t varies from t = 2 to t = 5. = i. Does the car travel at a constant speed over this interval of time?? ii. What is the car's average speed over this interval of time? feet per second Preview b. Suppose t varies from t 1.6 to t 2.2. i. Does the car travel at a constant speed over this interval of time? ? V ii. What is the car's average speed over this interval of time? feet per second Preview D