Answer:
Last answer, height is 150 ft
Step-by-step explanation:
from the graph, you can clearly see, when T=3, H=150
Which means The firework is at a height of 150 feet
It means your solving for x
115*20=2300.
50*5=250
First mechanic 20 hours
Second mechanic 5 hours
Huh?
You forgot something.