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The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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