A physical therapist is scheduling appointment for the day. She has six workers comp cases six Medicare patients awaiting care. If she choose we seven at random for her morning schedule, find the probability that she'll pick three worker's comp cases and four Medicare patients. Round your answer to five decimal places.

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.