Lisa wants to maintain an average of at least 80 on her spelling quizzes. So far, she has earned scores of 90, 90, 85, 70, 82, 83, and 88. What
is the LOWEST grade she can earn on the next quiz to have an average of at least 80?

If f(x) = 2x - 6 and g(x) = 3x + 9, find (f - g)(x). a. (f-g)(x) = x + 15 o o b. (f- g)(x) = -x - 15 o c. (f- g)(x) = 5x + 3 o d. (f- g)(x) = -x+3 submit

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

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect