Felipe and Samantha use a payment plan to buy musical instruments. Felipe writes the equation
y=-30x + 290 to represent the amount owed,
y, after x payments. The graph shows how much
Samantha owes after each payment.

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