Question

A ball is thrown into the air with an upward velocity of 28 ft/s. It's height h in feet after t seconds is?
Given by the function h=-16t^2+28t+7. How long does it take the ball to reach it's maximum height? What is the ball's maximum height? Round to the nearest hundredth, if necessary
A. Reaches the maximum height of 7 feet after 1.75 seconds
B. Reaches the maximum height of 43.75 feet after 0.88 seconds
C. Reaches the maximum height of 17.5 feet after 0.88 seconds
D. Reaches the maximum height of 19.25 feet after 0.88 seconds

Answer 1

Plug that equation in:
https://www.desmos.com/calculator

Answer 2

So d?

Answer 3

@Aveline

Answer 4

Yes

Answer 5

Thank you