Mary has $10 in her savings account. she owes her parents $50. she does some chores and her parents pay her $12. she also gets $25 for her birthday from her grandma. does mary have enough money to pay her parents what she owes them? if not, how much money does she need? explain?

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.