How many solutions does 7z+7=7z have

Which of these tables represents a non-linear function?

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew

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.