I’ve been stuck on this question for awhile and i can’t answer it

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

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.