Yo is anyone else sick of how will delete questions that were perfectly okay? Or how they get all p i s s e d off when you answer was long enough? Or you be having a good day, you answer and question, you get Brainlist on it, but 2 seconds later they deleted it?!

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Find the slope of the line passing through a pair of points

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.