Six students want to participate in the spelling bee, but there are only three spots. in how many ways can a group of three students be chosen?

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?