Answer:
domain x [0,4] range y [0,64]
Step-by-step explanation:
They are essentially asking us to solve:

Solving this equation for x tells us that it will take around 80.1 years for the materials in the vault to reduce to 357 pounds.
I believe it is 8,000 grams :).
Answer:
f
Step-by-step explanation:
1,3,5
4 looks like true but decreasing but 2 dollars also gives max revenue, so I not sure about it