52. Alexia knows that the height of an object propelled vertically from a height of 48 feet can be modeled by h = -16t2 + 32t + 48, where h is the height, in feet, and t is the time, in seconds. Using this model, how many seconds will it take the object to reach a height of 64 feet?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

Using the six bands and 64 equations, get 0=t2-2t+1 by transforming and eliminating elements, and get the solution x=1 or -1. Choose A.