3.4-2.8d+2.8d-1.33.4−2.8d+2.8d−1.3 ? The 2.8d's cancel each other out, but what about the 3.4 and 1.3? Would you combine them (3.4 - 1.3) bc they r like terms or would it be 2.1 or 2.1 +d?

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