Hi, my brother needs help again(4th grade math)

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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.