Problem 1: The last time Carolina visited the post office, she spent $4.49 to mail letters and packages. Each letter cost $0.37 to mail, while each package cost $0.88 to mail. If she sent two more
letters than packages, how many letters did she mail?

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

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