If bacteria foubles every 20 minutes how much bacteria will there be after 4 hours

4096 bacteria.

Step-by-step explanation:

If you start with one bacteria, and it doubles every 20 minutes, you would have 1*2^12 (Where 12 is every 20 minutes for 4 hours). 2^12 is 4096, so you would have 4096 bacteria after 4 hours.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

109 is the nearest whole number/final answer! : )