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.
If your looking for hourly they sold a total of 12 tacos per hour.
If your looking for daily they sold a total of 288 tacos per day.
Answer: has no equal sign
Answer:
Slope: 3
Step-by-step explanation:
find 2 points on the line and do rise/run which would get 3/1 which is 3