Mary wants to fill a cylindrical cup with water. The dimensions of the cup are labeled below:

Height: 15cm
Diameter: 6cm

How much water can Mary pour in the cup without it overflowing?

A.) 1,620 pi cm^3
B.) 540 pi cm^3
C.) 270 pi cm^3
D.) 180 pi cm^3

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.