Help please it would mean a lot

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

1foot = 12 inches; 1 yard = 3 feet

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