only answer if you know the answer if you put in the wrong answer ill report answer

During one year, eight turtles are born into a population. Ten turtles immigrate into the population, but two emigrate to find mates.

If the overall population growth is nine turtles, what was the death rate of turtles during the year?

Use this formula:
population growth = (birth rate + immigration) – (death rate + emigration)

7
9
11
29