Part 4: Solve a real-world problem using an absolute value function. A transaction is positive if there is a sale and negative when there is a return. Each time a customer uses a credit card for a transaction, the credit company charges Isabel. The credit company charges 1.5% of each sale and a fee of 0.5% for returns. ⦁ Let x represent the amount of a transaction and let f(x) represent the amount Isabel is charged for the transaction. Write a function that expresses f(x). (10 points) ⦁ Graph the function. (10 points) ⦁ What are the domain and range of the function? (5 points)