The city of smyrna has a flea population that has been doubling every year. if there are about 100,200 fleas this year, how many will there be 3 years from now? indicate the step where a variable is defined, the equation used to solve, and the final answer.

Final 801600              equation: ugh hold on this will take a few mins                                                           the second step is where the variable is defined. I just cant think of the equation. my brain doesn't work like that. I got this though give me a sec

Simple way to answer is each year it's doubled so starting with 100,200 next year would be 200,400 second year would be 400,800 third year would be 900,600