The population after 8 min is 1200 sorry that's only one I got time for. I think it should right though.
Answer:

Step-by-step explanation:
Given: 
To write: the given expression using summation notation
Solution:
Summation notation helps to write a long sum as a single expression.
In the summation notation, the variable
is called the index of summation.
Let
denote a set of n numbers.
Then in summation notation,


Answer:
Khan Academy will help.
Step-by-step explanation:
Type in your question.
False because it's a similarity transformation
Answer:
Where is the data
Step-by-step explanation: