The correct answer is option 1
200/200, or 200 over 200,whichever you prefer,i hope this helps
That is correct, however, you need to keep in mind that each bacteria created will multiply the same way the original does, so you have exponential growth
Since it's 9 cubed multiply 9 x 9 and then multiply the result by 9
9 x 9 = 81
81 x 9= 729