PLEASE HELP!!

Which of the following sets of numbers could be the side lengths of a right triangle?

5, 12, 13
5, 5, 9
14, 14, 14
2, 3, 5

If you answer right ill give brainliest, : )

Can someone pls ! pls answer all. no explanation needed..

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.