Most evenings after dinner duarte spends 30 minutes playing chess with his dad. write an equation for the number of minutes, m, that duarte spent playing chess with his dad if they played chess together e evenings.

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?