Answer:
1 pair = 23
2 pair = 51
3 pair - 80
4 pair - 109
5 pair = 137
Explanation:
Profit = Total revenue - total cost
If we make 1 pair of running shoe inserts
Profit = 30-7 =23
If we make 2 pairs of running shoe inserts
Profit = 60-9 =51
If we make 3 pairs of running shoe inserts
Profit = 90-10 =80
If we make 4 pairs of running shoe inserts
Profit = 120-11 =109
If we make 5 pairs of running shoe inserts
Profit = 150-13 =137