The function
gives the number of the original trout alive after x years. When the number of the original trout alive is 300, then

Solve this equation:

Answer: after 4.024 year (or 5 year if round to the whole number of years)
Answer: 5
Step-by-step explanation:
8+2=10
10/2=5
The total is 230 because you have to do the steps to it