Potato is launched vertically upward with an initial velocity of 100 ft/s from a potato gun at the top of an 85-foot-tall building. The distance in feet that
the potato travels from the ground after t seconds is given by
s(t) = -16t²+100t+85
a. Find the velocity of the potato after 0.5s and 5.75s.
b. Determine when the potato reaches its maximum height.
c. Find the acceleration of the potato at 0.5s and 1.5s.
d. Determine how long the potato is in the air.

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.