Which operation should be performed first according to the order of operations?
117 + 45 – 34 • 8 + 36 ÷ 12 – 12
a.
34 • 8
b.
36 ÷ 12
c.
117 + 45
d.
45 – 34

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.