I need the work Plz help!

This question awards 100 ! i really don’t want to fail i will also mark you !

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.

Find the solution(s) to x^2-14+49=0