Suppose we want to choose 3 letters, without replacement, from the 4 letters A, B, C, and D. a) How many ways can this be done, if the order of the choices matters?

b) How many ways can this be done, if the order of the choices does not matter?

Can someone answer this question for me

10 points? ? +++ me asap 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’s the range cuz i can’t find it?