Question

Sarina throws a ball up into the air, and it falls on the ground nearby. The ball's

height, in feet, is modeled by the function f(x) = -x2 - x + 3, where x represents time
in seconds. What's the height of the ball when Sarina throws it?
C
A) 4 feet
B) 2 feet
C C) 3 feet
D) 1 foot

Answer 1

C C) 3 feet

Explanation:

Answer 2

Option C.

Explanation:

It is given that the ball's height, in feet, is modeled by the function

`f(x)=-x^2-x+3`

where, x represents time in seconds.

We need to find the height of the ball when Sarina throws it. It means, we need to find the initial height of the ball.

Substitute x=0 in the given function, to find the initial height.

`f(0)=-(0)^2-(0)+3`

`f(0)=0+0+3`

`f(0)=3`

The height of the ball is 3 feet when Sarina throws it.

Therefore, the correct option is C.