A rental car company charges $31.35 per day to rent a car and $0.15 for every mile driven. Christian wants to rent a car, knowing that:
• He plans to drive 275 miles.
• He has at most $280 to spend.
Which inequality can be used to determine d, the maximum number of days
Christian can afford to rent for while staying within his budget?

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?