PLEASE HELP DOING A TEST!!
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Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

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

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83