A student received a coupon for ​%18 off the total purchase price at a clothing store. Let y be the original price of the purchase. Use the expression below for the new price of the purchase. Write an equivalent expression by combining like terms

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?