Please Help the picture down below
show your reasoning for 20 point

How to do this , and can some one explain

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π