Consider the function,

The function converts x Canadian dollars to U.S. dollars according to the January 19, 2008 values.

(a)

The equation by replacing by

Interchange x and y in the new equation

Solving this new equation for

Replacing with then the inverse function is,

Therefore the inverse function converts x U.S. dollars to Canadian dollars which means that dividing the U.S. dollars by 0.99295 gives Canadian dollars.