Jack pours cylinder-shaped concrete support bases for bird baths with a radius of 7 inches and a height of 26 inches. What is the volume of one base?

What values of c and d make the equation true?

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).

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?