Which is the direct linear variation equation for the relationship?
y varies directly with x and y = 10 when x = 2.

a. y = x – 8
b. y = x + 8
c. y = 5x
d. y = 2x + 6

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.