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. (Example 5)
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)? Explain.
d. What is the value in Euros of 100 U. S. dollars?