Why do banks pay you interest? A. They want you to become rich
B. With their extra money, they want to make their customers happy
C. They are borrowing your money and rewarding you for keeping your money with them
D. If they find change on the ground, they add it to the account of whoever they think dropped it

Taking algebra two apex courses and need with these questions

What is the slope of the line shown below?

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.