Raina has a bookcase with d shelves. There are 14 books on each shelf. Using d, write an expression for the total number of books.

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.