At the post office, 6 out of the 10 people in line were mailing a package. Based on this information, if 500 people frequent the post office, then how many could be expected to be mailing a package? *

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.