A certain bacterial culture is multiplying in a culture dish, doubling in size every 10 minutes. It takes exactly two hours to fill the whole dish. How long does it take to fill half the dish?

Ok so the equation would be

amount = number of bacteria originaly * optional * * 2^ (number of minutes divided by 10)

It's the number of minutes divided by 10 because it doubles every 10 minutes.

So if it took two hours for all of it to fill, it would've been 120 minutes so 12 10 minutes.

2^12

So half of that would be 60

I think it takes an hour if you divide it - - - the rest is just extra calculation