Answer:
Step-by-step explanation:
11 - 19 - 4 - (-8) =
11 - 19 - 4 + 8 =
- 23 + 19 =
- 4 <===
70 hours
3500 by 50 is 70
I believe its either 20 or 14
maybe 2 only?
I'm just guessing but it sounds right