It would be an A if i'm correct.
Answer:
common difference is 4
Step-by-step explanation:
12-4=8
8-4=4
Let's start by tidying up that equation and put it into slope-intercept form (y = mx + b); from there, we can plug in coordinates.

Let's use the distributive property on the right side:

Now add 4 to both sides

Which simplifies to:

Since that's the equation of our line, now we can plug in coordinates and see what it churns out.
We know that the x-coordinate of P = 4 so let's substitute 4 in for x and calculate the y-coordinate:



So the y-coordinate for point P =
10
Think of 40 as 100% (even though it is not)
X will be the value we are looking for
<span> If 40 is 100%, so we can write it down as 40=100%.
</span>
<span>We know, that x is 64% of the output value, so we can write it down as x=64%
</span>
-----------------------------------------------
1) 40=100%
<span>2) x=64%
</span>----------------------------------------------
<span>40/x=100%/64%
</span>
40/x=100/64
(40/x)*x=(100/64)*x
40=1.5625*x -divide both sides of the equation by (1.5625) to get x-
40/1.5625=x
25.6=x
x=25.6
So we get;
64% of 40=
25.6
You would just write f(x) (f of x) in for y: f(x) = 7x + 8.
Hope it helps.