Answer:

Step-by-step explanation:
Independent events:
If two events, A and B are independent, the probability of both A and B happening is the same as the probability of A happening multiplied by the probability of B happenings, that is:

In this question:
The statement is 
Answer:
A) x² + 7x - 9
Step-by-step explanation:
Deduct\Add each like-term to arrive at your answer.
The answer is B. There are 12 line segments
Answer:
C) High temperature of the day and number of zoo visitors that day
Step-by-step explanation:
Correlation describes the relationship between two quantitative variables and both variables are quantitative.