Question

A culture initially contains 200 bacteria. If the number of bacteria doubles every 2 hours, how many bacteria will be in the culture at the end of 12 hours?
a.
2,600
c.
36,300
b.
12,800
d.
3,400

Answer 1

will give medal

Answer 2

can my medals double every two hours?

Answer 3

b. 12,800 you multiply 200 by 2 six times because it only doubles every 2 hours.

Answer 4

first lets just do it
\[200\\
400\\
800\\
1600\\
3200\\
6400\]

Answer 5

So 12/2=6. Then 200*2*2*2*2*2*2=12800

Answer 6

oh i get it now

Answer 7

thanks

Answer 8

i have a similar question if any1 interested

Answer 9

what @MLeighW said
more succinctly written as
\[200\times 2^6\]

Answer 10

A culture initially contains 200 bacteria. If the number of bacteria doubles every 2 hours, how many bacteria will be in the culture at the end of 12 hours?
a.
2,600
c.
36,300
b.
12,800
d.
3,400

Answer 11

wow looks pretty similar

Answer 12

lol

Answer 13

Heavy rain caused a river to rise. The river rose three inches the first day, and each additional day it rose twice as much as the previous day. How much did the river rise in five days?
a.
102 in
c.
93 in
b.
145 in
d.
15 in

Answer 14

srry yeah lol

Answer 15

\[3\times 2^5\] if i am reading it correctly

Answer 16

it isnt a option

Answer 17

yeah i see that

Answer 18

what then????????? HELP some1

Answer 19

oh i see i think you have to add them

Answer 20

\[3+6+12+24+48\]

Answer 21

is 93 an option?

Answer 22

oh yes
thanks
yeah