I need to solve -15 (1/5w -1/3) problem for math class

Could someone with number 1 and 2

Which table represents a linear function? i'll give brainliest to first answer ^'^

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.