Which expression is a sum of cubes? 0-24a15+125018
O-64a27 + b
0 27x9 + y 6
O 81x24 + 8y40

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).

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?