If x represents 2.8% of 270 then which of the following equation would not result in the correct value for x

What is 1/2 x (6 x 4)+3 + 2 show your work

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.

Can someone explain to me how to do