Karita had $138.72 in her checking account . she wrote checks for $45.23 and $18.00. then she made a deposit of 75.85 into her account. what's the best estimate for how much money is in karita's account now ?

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.