Your marketing department estimates that Medicare urology visits equal this formula:

$5(1$ X C$)+(-6\mathrm{.}5$ x TO$)+(5$ x TR$)+(0\mathrm{.}01$ x Y$).$

C denotes the Medicare copayment $($now $$20),$ TO is waiting time in your clinic $($now $30$ minutes$),$ TR is waiting time in your competitor$$s

clinic $($now $40$ minutes$),$ and Y is per capita income $($now $$40,000).$

a$.$ How many visits do you anticipate?

b$.$ Medicare$$s allowed fee is $$120.$ What revenue do you anticipate?

c$.$ What might change your forecast of visits?