1. Classify the following polynomials as monomial, binomial trinomial and polynomial. 1) x2 – xy + y + 4

What is the simplified expression for 6(2(y+x))

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

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).