Only answer if you’re sure :) need the whole answer! Will give

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

The volume of a cube is 8 in to the 3rd power. how long is each side?