For the example​ below, prorate the given expenses to find the monthly cost. Sara pays ​$3600 for tuition and fees for each of the two​ semesters, plus an additional $420 for textbooks each semester.
The prorated monthly cost for tuition and fees and textbooks is ​$___. ​(Round to the nearest dollar as​ needed.) ​

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.