3. The points (15,21) and (25,35) form a proportional relationship. a) Find the slope of the line through the points.
b) Which graph represents this relationship?

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

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

Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.