Answer:
7
Step-by-step explanation:
C) 13
The y value adds one by every x; therefore 4 would be 13.
You're starting at 400. Each time you're cutting in half.
So the common ratio is 1/2 which means the equation is

which is in the geometric sequence format. So the answer is choice D
Answer:
A is the answer
Step-by-step explanation:
m¹⁶/4n¹²
Answer:

Step-by-step explanation:
Slope intercept form is
where <em>m </em>is the slope and <em>b </em>is the y-intercept.
Slope is
or
in this case = 
Substitute one of the coordinates for x and y. I am going to use (0, -4) so:

since m = 2 and b = -4, we can conclude that the equation would be
