Problem
Eric works at the deli on weekends to earn extra money. He makes \( \$ 10 \) per hour making sandwiches, and \( \$ 14 \) per hour delivering orders. Eric puts half of his total earnings in a savings account for college. He wants to know how much he saves each week. (1) Which expression represents the total amount of money Eric saves for working \( s \) hours making sandwiches and \( d \) hours delivering orders? \[ \frac{1}{2}(10 s+14 d) \] (1) This weekend, Eric makes sandwiches for 5 hours and delivers orders for 4 hours. How much money does he save? Eric saves \( \$ 1 \quad \) this weekend.
Solution
Step 1 ：\frac{1}{2}(10(5)+14(4))
Step 2 ：\frac{1}{2}(50+56)
Step 3 ：\frac{1}{2}(106)
