Your favorite dog groomer charges according to your dog's weight. If your dog is 12 pounds and under, the groomer charges $35. If your dog is between 12 and 20 pounds, the groomer charges $45. If your dog is 20 pounds and over, the groomer charges $45 plus $3 for each pound over 20 pounds. Write a function f that determines the price in dollars the groomer will charge in terms of w, the weight of the dog in pounds. Be sure to write the pieces of the domain as inequalities. 35 if W=20