Stephanie wants to save $1000 for a down payment on a car she wants to buy in 3 years. she opens a savings account that pays 5% interest compounded annually. about how much should stephanie deposit now to have enough money for the down payment in 3 years?

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.