Two jet planes simultaneously started travelling in opposite directions from the same airport. four hours later they were 3800 miles apart. if one plane traveled 80 miles per hour faster than the other, what was the speed of each plane?

Ineed with math stuff it involves graphs

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.

What is 60.9643790503 to 5 decimal