Which expression represents the volume, in cubic units, of the composite figure?

a) π(5^2)(13)-1/3π(5^2)(12)
b) π(5^2)(13)-1/3π(5^2)(25)
c) π(5^2)(13)+1/3π(5^2)(12)
d) π(5^2)(13)+1/3π(5^2)(25)

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.

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?