Answer: The probability that all 8 people are right handed is about 27.25%.
If the chance a person is left handed, the chance a person is right handed is 85%.
Now, we just need to find the chance that this 85% event happens 8 times in a row.
Simply, multiply it by itself 8 times.
(0.85)^8 = 0.2725
There is a 27.25% chance all 8 people are right handed.
As your question is stated, there is no answer!
I'm going to assume the polynomial you meant is:

To create a perfect square trinomial, take half the coefficient of x and then square it.

In all problems like this, you want to square half the coefficient of x -- always half.
It shoukd be A if im not mistaken
Answer:
-9
Step-by-step explanation:
Slope is the same so y=-2x+b
Plug in x and y
-3=-2(-3)+b
-3=6+b
b=-9
(Y-intercept is -9)