How many times is the volume of the large sphere than the small sphere?

2
4
6
8

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

To decrease an amount by 16% what single multiplier would you use