Sarah kicked a ball in the air. The function
f
ff models the height of the ball (in meters) as a function of time (in seconds) after Sarah kicked it.

The ball hits the ground at 5 s

Step-by-step explanation:

The question seems incomplete and there is not enough data. However, we can work with the following function to understand this problem:

(1)

Where models the height of the ball in meters and the time.

Now, let's find the time when the ball Sara kicked hits the ground (this is when ):

(2)

Rearranging the equation:

(3)

Dividing both sides of the equation by :

(4)

This quadratic equation can be written in the form , and can be solved with the following formula:  

(5)  

Where:  

Substituting the known values:  

(6)  

Solving we have the following result:

 This means the ball hit the ground 5 seconds after it was kicked by Sara.

40% off the regular price is the correct answer.

step-by-step explanation:

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.