How to create your own piecewise function

What is the equation of the graph below? y=sec(x)-4

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

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?