Lunch has 3 choices for the main dish, chicken, taco, or hamburger, 2 choices for side dish, fries or salad, and 4 choices for beverage, milk, chocolate milk, juice, or water. How many lunches are possible?
For the $2,000 account at 4%, Reuben earned $80, For the $6,000 account at 9%, he earned $540. a: $540+$80=$620 b: 12.90322580645161% 8000/620=12.90322580645161