Write a function for the following description: What is the total manufacturing cost of calculators, C, if the cost of to make one calculator is $75, then number of calculators produced is n and the fixed cost (costs that occur regardless of how many calculators such as rent) is $25,000

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.