Write equations for the vertical and horizontal lines passing through the point (-3,0)

How do i put 3(x+7) in distributive property

(60 points) explain this in detail

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.