Which of the following expressions are polynomials? check all that apply.

In a school 2/3 of the students study a language of those who study a language 2/5 study french

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3