Abottled-water company has designed a new cup for its dispenser. the cup will be a right circular cone with a three-inch radius. how tall will the cup need to be to hold $30 \pi$ cubic inches of water?

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Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0