an online clothing company sells custom sweatshirts. the company charges $5.50 for shipping plus $8.50 for each sweatshirt. linear function rule that models the total cost y (in dollars) for any number of sweatshirts x. when there is a single shipping charge, the linear function rule is y equals?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.