Solve the system of equations.
- 4x + 1ly = 15
x = 2y
y=

use 3

Step-by-step explanation:

The height of ball is 17 ft at t=0.55 and t=1.14.

Step-by-step explanation:

The general projectile motion is defined as

Where, v is initial velocity and y₀ is initial height.

It is given that the initial height is 7 and the initial upward velocity is 27.

Substitute v=27 and y₀=7 in the above equation to find the model for height of the ball.

The height of ball is 17 ft. Put h(t)=17.

On solving this equation using graphing calculator we get

Therefore the height of ball is 17 ft at t=0.55 and t=1.14.