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.
Answer:
V=1/3hπr². Basically, 1/3 x height x 3.14 (pi) x radius squared.
Step-by-step explanation:
The formula of figure 2 would be 1/3 x 15 x 3.14 x 8 squared. The volume of figure 2 would be 1005.30965
the formula for figure 3 would be 1/3 x 15 x 3.14 x 4 squared. The volume of it would be 251.32741
hope this helps! (Also please make me brainliest if this helps u :) )
Answer:
<em>6</em>
Step-by-step explanation:
<em>hold up hold up so you are saying 60 less than what quotient I'm guessing 68 divided by 12 so the answer would be 6</em>
Answer:
Undefined (DNE)
Step-by-step explanation:
Any vertical line has an undefined slope.