When an object is dropped vertically from a platform, its height after t seconds can be estimated with the formula shown.
h=h0−16t2
h is the height of the object in feet.
h0 is the initial height of the object in feet.
t is the time in seconds after the drop.
Which equation and solution tells how long it takes the object to reach a height of 84 feet if its initial height is 180 feet?
Answer choice
180=84−16t2
t=−6–√
180=84−16t2
t=−7–√
84=180−16t2
t=6–√
84=180−16t2
t=7–√
