identify parameters of an exponential function

You deposit $100 into a long-term certificate of deposit (CD) in which your money will double every 7 years. Write a function to show how much money you will have in total in 7, 14, 21, 28, and 35 years. Use the function to create a table, and then graph the function. What do the parameters represent in the context of this problem?
  1. Write a function.
  2. Create a table.
  3. Graph the function.
  4. Identify the parameters.