A bag of marbles contains 4 blue, 5 red and 1 black. Edwin picks a marble and replaces it twenty times. The results are as follows; red 8, black 5, blue 7. Using his results what is the experimental probability Edwin picking a red marble? 1/2
2/5
1/4
2/3

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.