What are the next three terms in the sequences below? 1.2,5,7,12,
2. 9, 11, 20, 31,
3.2, 5, 10, 50,
4.1,3,3,9, _

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