Marissa buys 4 shirts that cost $12.99 each and several pairs of shorts that cost $15.75 each. after she gets home, she decides to return 2 shirts and some of the shorts. let b represent the number of pairs of shorts marissa bought and r represent the number she returned. which expression represents the total amount marissa spent, after the returns?

Which is the completely factored from of xy^3-x^3y

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?