31. The distance, d, an accelerating object travels in
t seconds can be modeled by the equation d = at²,
where a is the acceleration rate, in meters per second
per second. If a car accelerates from a stop at the rate
of 20 meters per second per second and travels a
distance of 80 meters, about how many seconds did the
car travel?
A. Between 1 and 2
B. Between 2 and 3
C. Between 3 and 4
D. 4
E. 8
