The function F (t) = -16t^{2} + 64t + 5 represents the height (in feet) of a pumpkin t seconds after being launched from a catapult. What is the maximum height of the pumpkin as it flies through the air? Enter your answer as a number without units.

Rosy waxes 2/3 of her car with 1/4 bottle of car wax. at this rate, what fraction of the bottle of car wax will rosey use to wax her entire car

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

We just started the introduction into circles and i have no idea how to do this.