If 120 men used the gym how many more women were there

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

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).

Which of the following is correct interpretation of the expression -4+13