What is the volume of this container?

please helppp

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

With number 11 ( show how you got the answer)

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.