(b) Does each triangle have the same change in x-values? Explain

Asap! i'm not good math and i'm lost.

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

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose