Marie's clothing store buys coats for $50 and then sells them for $80. What is the percent markup on the price of the coats?

Solve this problem! extra ! 3025/5.5 = a/90.75

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places