Asquare concert stage in the center of a fairground has an area of 4x^2 + 12x +9 ft^2. the dimensions of the stage have the form cx+d where c and d are whole numbers. find and expression for the perimeter of the stage. what is the perimeter when x = 2 ft?

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