Find the local maximum and minimum values and saddle point(s) of the function. if you have three-dimensional graphing software, graph the function with a domain and viewpoint that reveal all the important aspects of the function. (enter your answers as a comma-separated list. if an answer does not exist, enter dne.) f(x, y) = x3 + y3 − 3x2 − 9y2 − 9x

Two lines parallel to a third line are parallel to each other. always sometimes or never

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

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0