THIS IS A TEST. I'LL GIVE U BRAINLIEST AND 15 POINTS !!! PLS HELP.

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

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.

What is the gcf of 20c^3-5c^4+30c^6