Question

A bacteria culture initially contains 2500 bacteria and doubles every half hour.

Answer 1

Answer:

35000

Step-by-step explanation:

I don't know the first one but I do know that in 7 hours it will be 35000

Answer 2

Answer:

1. 3333.33

2. 20,480,000

Step-by-step explanation:

1. first term= 2500microganism.

in ten minutes =2500/3=833.33

some organisms do not completely divide.

first term + ten minutes

=2500+833.33= 3333.33 organisms

2. using geometric progression with formula Tn=ar^n-1

r=common ratio= for this question it is 2.

a= first term

therefore, 30 minutes=1st term

so, 7hours =14th term

T14= 2500*2^(14-1)

= 2500*2^13

= 2500*8192

= 20,480,000 micoorganisms