1. Rise and run. If the rise is 3/2 and the run is 5, then what is the ratio of the rise to the run?
2. Fast food. If four out of the five doctors prefer fast food, then at a convention of 445 doctors, how many prefer fast food ?
3. Bear population. To estimate the size of the bear population on the Keweenaw Peninsula, conservationists captured, tagged, and released 50 bears. One year later, a random sample of 100 bears included 2 tagged bears. What is the conservationist's estimate of the size of the bear population?