If he earns $17 per hour for his regular time and $20 for his overtime rate, what is his total pay? regular work 8 hrs. working on sat eve is considered overtime. how many hours did ralph work?

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?