Answer:
The volume of cone is increasing at a rate 1808.64 cubic cm per second.
Step-by-step explanation:
We are given the following in the question:

Volume of cone =

where r is the radius and h is the height of the cone.
Instant height = 9 cm
Instant radius = 6 cm
Rate of change of volume =

Putting values, we get,

Thus, the volume of cone is increasing at a rate 1808.64 cubic cm per second.
Answer: 
Step-by-step explanation:
Circumference formula: 


Answer: 5/12
Step-by-step explanation:
Your answer is A because t=temperature and since the temperature is below -18.5 it would be a negative and your equation would be t< -18.5
Answer: 9 subtracted from y and multiplied by 2