Kathy had $45.67 in her checking account. she wrote a check for $65.23. what was her balance after the check was cashed? a. $110.90 b. $39.56 c. -$19.56 d. -$110.90

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.