What type of polynomial is
- 2x + x2 - 3

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 does the relationship between the mean and median reveal about the shape of the data

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