Question

3. The number of bacteria in a certain box doubles every hour. There were 5 bacteria present in the box originally and the box wasfully filled with bacteria in 30 hours. How many bacteria will be present at the end of 3rd hour? * O 52 O 53 O 150 O 15 O​

Answer 1

Answer:

Photosynthesis

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Step-by-step explanation:

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Answer 2

Answer:

It is given that the number of bacteria doubles every hour.

Therefore, the number of bacteria after every hour will form a G.P.

with first term (a=30) and common ratio (r=2)

∴a

3

=ar

2

=(30)(2)

2

=120

Therefore, the number of bacteria at the end of 2nd hour will be 480.

a

5

=ar

4

=(30)(2)

4

=480

and a

n+1

=ar

n

=(30)(2)

n

Thus the number of bacteria at the end of nth hour will be (30)(2)

n