Andy's bill for lunch at a restaurant was $16.He left 15% tip. What was the amount of the tip?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

What’s -11-33k and factor each expression completely

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.