A car is driving away from a crosswalk, The formula d = + 2t expresses the car's distance from the crosswalk in feet, d. in terms of the number of seconds, , since the car started moving. a. Suppose t varies fromt = 1tot = 4. 1. Does the car travel at a constant speed over this interval of time? No v | 11. What 1s the car's average speed over this interval of time? 5.25 # feet per second Preview b. Suppose varies from = 1.6to t = 2.4, 1. Does the car travel at a constant speed over this interval of time? No v | ii. What is the car's average speed over this interval of time? 08 Jefectpersccond Preview Submit