The Lazy River has a current of 2 miles per hour. A motorboat can travel 15 miles down the river in the same amount of time it takes to travel 9 miles up the river.
What is the speed of the boat in still water? Please show your work and use table to
relate time, speed, distance.

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Which of the following is not a subset of {1,2,3}?

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.