An object is thrown upward out of a building window. The equation h=-16t²+40t+24 models the height in feet, h, of the object above the ground t seconds after it is thrown. How long does it take for the object to hit the ground?

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Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u. s. dollars for every 100 euros. b. gabriella averages 100 u. s. dollars for every 25 euros. c. gabriella can exchange 75 u. s. dollars for 100 euros. d. gabriella can exchange 100 u. s. dollars for 75 euros.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount