Answer:
Below
Step-by-step explanation:
● x(t) = 2t^2 -20t
A is the average change between t = 1 and t = 3 wich also the velocity.
● A = [x(3)-x(1) ]/(3-1)
● A = [ x(3) - x(1)] / 2
● x(3) = 2×3^2 - 20 ×3 = 18-60= -42
● x(1) = 2×1^2 -20×1 = 2-20 = -18
● A = (-42-(-18))/2
● A = (-42+18)/2
● A = -24 /2
● A = -12
A is negative so the car must be going backwards
