Hello! :) Please help me solve this + explain your answer :)

I will indeed give you Brainlst <3

Working on itts i’m going to need you to me as i go along 1-5

Negative 5 1/12 + negative 4 1/4 + 6 3/4

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.