Those are supplementary angles, therefore:

I'm assuming you mean which one is written properly? It would be either 3 x 10^4 or 6 x 10^4.
Hope it helps!
Answer:
8 hours
Step-by-step explanation:
Its is on the chart and is at the top
Answer:
y=2x+3
Step-by-step explanation:
2=y-5/x-2
y-5=2x-2
y=2x+3