A strain of bacteria undergoes fission every 30 minutes. How long would it take 10 bacteria to increase 640 bacteria?
A) 3hrs
B) 6hrs
C) 18hrs
D) 64hrs
Please explain how you got the answer and why? Please and thank you I really appreciate the time you took to reply

A) 3hrs

Step-by-step explanation:

Fission is the action of dividing or splitting something into two or more parts.

So, we're going to continuously multiply our answers by 2 until we get 360

10 x 2 = 20   30min

20 x 2 = 40   1hr

40 x 2 = 80   1hr 30min

80 x 2 = 160   2hrs

160 x 2 = 320   2hrs 30min

320 x 2 = 630   3hrs

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.