Vlad spent 20 minutes on his history homework and then completely solved x math problems that each to 2 minutes to complete. What is the equation that can be used to find the value of y, the total time that vlad spent on his homework, and what are the constraints on the values of x and y?

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.