M5-3/2x less than or equal to 1/3
1 answer:
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Answer:
(b), (d) and (e)
Step-by-step explanation:
Given
See attachment for
Required
Select true statements from the given options
(a) = days the bacteria reaches 30000
We have:
In this case:
and
So, we have:
Using a calculator, we have:
So:
The above equation is false.
(a) is not true
(b) The graph shows that
We have:
Let t = 3
So;
From the graph,
So:
Take natural logarithm of both sides
This gives:
(b) is true
(c) is the logarithm form of
We have:
Take natural logarithm of both sides
This gives:
(c) is false
(d) and
From the graph, we have:
--- rough readings
This implies that:
is true
Because
Take natural logarithm of both sides
Rewrite as:
We have:
Take natural logarithm of both sides
Substitute in
(d) is true
(e) The graph shows that
We have:
Let t = 2.3
So;
From the graph,
---- rough readings
So:
Take natural logarithm of both sides
This gives:
(e) is true
