At a local garage sale, you bought 9 old CDs for \( \$ 2 \) each, 5 DVDs for \( \$ 4 \) each, and an old iPad for \( \$ 33 \). If you paid with a \( \$ 100 \) bill, about how much change did you get back?

1. Calculate the total cost of the CDs: \[ 9 \times 2 = 18 \] So, the CDs cost \$18. 2. Calculate the total cost of the DVDs: \[ 5 \times 4 = 20 \] So, the DVDs cost \$20. 3. The cost of the iPad is: \[ 33 \] So, the iPad costs \$33. 4. Find the total amount spent by adding all costs: \[ 18 + 20 + 33 = 71 \] So, the total cost is \$71. 5. Determine the change received by subtracting the total cost from \$100: \[ 100 - 71 = 29 \] So, the change you get back is \$29.