Aball is thrown in the air from a ledge. it's height in feet represented by f(x)=16(x^2-6x-7), where x is the number of seconds since the ball has been thrown. the height of the ball is 0 feet when it hits the ground. how many seconds does it take the ball to reach the ground?

Step-by-step explanation:

Since we know that the height is 0, we can figure out how long it took the ball to reach the ground by setting and solving for :

Because time can only be positive, the answer is 7 seconds.

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

1) letter c.

2) 4 square root of 9

hope this

step-by-step explanation: