ANSWER
EXPLANATION
The given geometric sequence is
400, 200, 100...
The first term is
The common ratio is
The nth term is
We substitute the known values to get;
For example, if x/2=7, x would be equal to 7x2=14, bringing the whole number the variable is divided by to the other side of the equation.
Since the square is on a quadrant plane and it is a square, the fact that the lines cross in the center and start and stop in the corners allows you to tell that they are perpendicular.
So answer one is (B, D) 2 is (0, C) 3 is: 1
% damaged = (14 000/40000) * 100%
= 14/40 * 100%
= 0.35*100%
= 35%
B. (-2,1)
By checking the x coordinates, I saw there was two -2, but the output was different, so one of them had to be taken out to make it a function.
Function: Every input must have one out must.