What is the solution of mc011-1.jpg? picture inside***

Hi if you want to play a sports related kahoot go to kahoot.it and type in this code: 659344

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.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?