Additive inverse of 14+ (-6)

What describes horizontal cross section of the right rectangle 6m 8m 5m

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

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.