The polynomial given below has root(s).
2x2 + 5x + 2
a. two complex
b. two positive
c. two negative
d. one positive and one negative

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.