Aphotograph is reduced by a scale factor of 3/8 . if the original length of the photograph was 20 inches, what is the length of the reduced photo?

To solve this problem you must apply the proccedure shown below:

 1. You have that the following information given in the problem above: The photograph is reduced by a scale factor of 3/8 and the original had a length of 20 inches, 

 2- Therefore you have:

 length=20 inches-(20 inches x 3/8)
 length=20 inches-7.5 inches
 length=12.5 inches

 3- Then, as you can see, the answer is: 12.5 inches.

When the ball hit the ground, the height of the ball will be zero. So using the value of h(x) as zero in the given equation, we can find the time in which the ball will hit the ground.

0 = -(x-2)^2 + 16

(x-2)^2 = 16

x-2 = 16

x-2 = 4

x = 6

This means the ball will hit the ground 6 seconds after Amir threw it.