CURRENCY The average exchange rate from Euros to U.S. dollars for a recent four-month period can be described by f(x) = 0.66x, where x is the currency value in Euros.
a. Explain why the inverse function f-1(x) exists. Then find f-1(x).
b. What do f-1(x) and x represent in the inverse function?
c. What restrictions, if any, should be placed on the domains of f(x) and f-1(x)?
d. What is the value in Euros of 100 U.S. dollars?