6. A population of bacteria is doubling every 3 hours. If there are 400 bacteria at a given moment in time, find: a) A formula for the number of bacteria B at time t. b) After how many hours will there by 1000 bacteria? Solve algebraically, accurate to 2 decimals.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.7: Applications
Problem 13EQ
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The intensity of light is reduced by 2% for each metre that a diver descends below the
surface of the water. At what depth is the intensity of light only 10% of that at the
surface? Solve algebraically, accurate to 2 decimal places.
5.
6.
A population of bacteria is doubling every 3 hours. If there are 400 bacteria at a given
moment in time, find:
a)
A formula for the number of bacteria B at tìme t.
b)
After how many hours will there by 1000 bacteria? Solve algebraically, accurate
to 2 decimals.
Transcribed Image Text:The intensity of light is reduced by 2% for each metre that a diver descends below the surface of the water. At what depth is the intensity of light only 10% of that at the surface? Solve algebraically, accurate to 2 decimal places. 5. 6. A population of bacteria is doubling every 3 hours. If there are 400 bacteria at a given moment in time, find: a) A formula for the number of bacteria B at tìme t. b) After how many hours will there by 1000 bacteria? Solve algebraically, accurate to 2 decimals.
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