Date \( \qquad \) 11. You work in a bookstore. A customer buys a book and the after-tax [ 3 m ] cost is \( \$ 15.60 \) The customer gives you \( \$ 20 \) a) Calculate the change due to the customer. \$ \( \qquad \) b) Use currency mahipulatives to make the correct change. Then draw the bill/coin combination below.

To calculate the change due to the customer, we need to subtract the after-tax cost of the book from the amount the customer gave. Given: - After-tax cost of the book = $15.60 - Amount given by the customer = $20 Change due to the customer = Amount given by the customer - After-tax cost of the book Let's calculate the change due to the customer. Calculate the value by following steps: - step0: Calculate: \(20-15.6\) - step1: Subtract the numbers: \(4.4\) The change due to the customer is $4.40. Now, let's use currency manipulatives to make the correct change. We need to find the combination of bills and coins that adds up to $4.40. The correct change can be made using the following combination: - 4 $1 bills = $4 - 0.40 in coins (40 cents) Therefore, the correct change is 4 $1 bills and 40 cents in coins.