1. Piecewise Functions

5. Write the formula for the piecewise function.

6. A store charges $15 per t-shirt for orders of 50 or fewer T-shirts, $13.50 per t-shirt for orders of 75 or fewer but more than 50 t-shirts, and $12.50 per t-shirt for orders of more than 75 t-shirts. Write a piecewise function representing the situation.
The cost of having your dog groomed is based on the weight of your dog. For a dog up to 30 pounds, the cost is $25. For larger dogs, the cost is $25 for 30 pounds plus $0.50 for each pound over 30. Write a piecewise function representing the situation.

7. Write each absolute value function as a piecewise function.