The function .

Here y = The exhaust temperature in degrees Fahrenheit and x = The percent load for a diesel engine.

               (Write original function)

               (Interchange x and y)

               (Isolate the y - term)

                     (Divide each side by 0.03)

                   (Apply square root each side)

The inverse function .

x = The exhaust temperature in degrees Fahrenheit and y = The percent load for a diesel engine.

The inverse function .

The inverse function .

The inverse function graph is

The function and y = 500 degrees Fahrenheit.

Here y = The exhaust temperature in degrees Fahrenheit and x = The percent load for a diesel engine.

                     (Substitute y = 500)

                                  (Subtract 245.50 from each side)

                                        (Divide each side by 0.03)

                                              (Take root each side)

The percent of load at y = 500 degrees Fahrenheit.

The percent of load .