Why does school suck?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Find the value of x for which line a is parallel to line b

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.