Answer:
a) 146 feet
b) 4.5 secs
Explanation
a) The maximum height is the value of the height with the greatest value. Since the greatest value amount the height is 146 feet, hence the maximum height is 146 feet
b) The height of the rocket at the ground level is 0 feet. Hence the equivalent time whrn the height is at 0 feetbis 4.5 secs. Hence it will take 4.5secs for the rocket to reach the ground
