1. **State the problem:** Calculate the monthly finance charge for Susan's credit card with an APR of 7.3% and an average daily balance (ADB) of 112.74. 2. **Formula:** The monthly finance charge is calculated by multiplying the average daily balance by the monthly periodic rate. 3. **Calculate the monthly periodic rate:** APR is annual percentage rate, so monthly rate = \frac{7.3}{12} = 0.6083\% = 0.006083 (decimal form). 4. **Calculate the finance charge:** $$\text{Finance Charge} = \text{ADB} \times \text{Monthly Rate} = 112.74 \times 0.006083$$ 5. **Perform the multiplication:** $$112.74 \times 0.006083 = 0.6855$$ 6. **Round to nearest cent:** $$0.6855 \approx 0.69$$ **Final answer:** 0.69 Note: The second question is not solved as per instructions to solve only the first question.