Help please i have 0 clue on what to do

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. 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.

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left