You really enjoy cooking and are planning on having friends over for dinner. You
want to calculate how long it will take you to cook. You know you will need 10
minutes of prep time no matter how many guests come to dinner, and you will
need 8 additional minutes per guest.
(A) Define the variables and the function.
(B) How long would it take you to cook if four people came to dinner?
(C) State a realistic domain