The length of a rectangle is 3n+ 2 and its width is n-1. the perimeter of the rectangle is twice the sum of its length and its width. write an expression that represents the perimeter of the rectangle. find the perimeter of the rectangle when n= 4 inches

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?