a dolphin swims 665,280 feet in 3 hours. use the formula d = rt, where d represents distance, r represents rate, and t represents time, to answer the following questions. show your work.

part a: rearrange the distance formula, d = rt, to solve for rate.
part b: find the dolphin's rate in feet per hour.

part c: find the dolphin's rate in miles per hour.

part d: which unit, feet, or miles, makes more sense to use in this scenario, and why?

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.