-3 + 7 = 4
4 - 7 = -3
I think that's what you want.
Answer:
16
Step-by-step explanation:
Explanation:
The cost for the ad can be calculated as:
Cost = $29 + 3.45(3) + $20
Cost = $59.35
Because the ad has 7 lines, 4 that are include in the initial
