Cylinders a and b have the same height. the radius of cylinder a is twice the radius of cylinder b. how does the volume of cylinder a compare to the volume of cylinder b?
a. cylinder a has half the volume of cylinder b
b. cylinder a has twice the volume of b
c. cylinder a has 4 times the volume of b
d. cylinder a has 8 times the volume of b

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

The green family is a family of six people. they have used 4,885.78 gallons of water so far this month. they cannot exceed 9,750.05 gallons per month during drought season. write an inequality to show how much water just one member of the family can use for the remainder of the month, assuming each family member uses the same amount of water every month.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)