Organisms A and B start out with the same population size. Organism A's population doubles every day. After 5 days, the population stops growing and a virus cuts it in half every day for 3 days.

Organism B's population grows at the same rate but is not infected with the virus. After 8 days, how much larger is organism B's population than organism A's population? Answer the questions to find out.

3. By combining the increase and decrease, find an exponential expression for the total change in organism A's population after 8 days. Show your work. Write your answer in the space below.

4. Write an exponential expression showing organism B's increase in population over the same 8 days.
Write your answer in the space below.

5. Use your answers to questions 3 and 4 to write an expression for how many times greater organism B's population is than organism A's population after 8 days.
Simplify your expression, then write it as a number that is not in exponential form. Show your process.
Write your answer in the space below.