There u just needed to search the formula
Answer:
19 days
Step-by-step explanation:
Given
--- initial
-- rate
Required
Days when the fish gets to 30
The function is exponential and as such it follows;

Where x represents the number of days and y the number of fishes
Because the fishes decreases;

So, we have:

Express as decimal


In 



So, we have:

Divide both sides by 150

Take log of both sides

Apply law of logarithm

Make x the subject




<em>Hence, it takes approximately 19 days</em>
Answer:
-
i
Step-by-step explanation:
Given
Multiply numerator/ denominator by i
=
[ i² = - 1 ]
= 
= -
i
Your answer would be approximately 254.5 if you round since 9^2 times pie you would get such