1. **State the problem:** You and your friend each have a meal with given costs, sales tax, and tips. We need to calculate the total amount each person spends and determine who spends more and by how much. 2. **Formulas used:** - Sales tax amount = Meal cost \times Sales tax rate - Tip amount = Meal cost \times Tip rate - Total bill = Meal cost + Sales tax amount + Tip amount 3. **Calculate your total bill:** - Meal cost = 15.85 - Sales tax = 15.85 \times 0.06 = $$0.951$$ - Tip = 15.85 \times 0.18 = $$2.853$$ - Total = 15.85 + 0.951 + 2.853 = $$19.654$$ 4. **Calculate your friend's total bill:** - Meal cost = 14.30 - Sales tax = 14.30 \times 0.06 = $$0.858$$ - Tip = 14.30 \times 0.20 = $$2.86$$ - Total = 14.30 + 0.858 + 2.86 = $$18.018$$ 5. **Compare totals:** - Difference = 19.654 - 18.018 = $$1.636$$ 6. **Conclusion:** You spend more on your total bill by $$1.636$$. **Final answer:** YOU: Meal: 15.85 Tax: 0.951 Tip: 2.853 Total: 19.654 FRIEND: Meal: 14.30 Tax: 0.858 Tip: 2.86 Total: 18.018 Who spends more on their total bill? You spend more by 1.636.