Answer:
Option D
Step-by-step explanation:
The equation to predict the amount saved is

Assuming that the variable x represents the saving months, then substitute
in the quadratic equation and solve for y.

The answer is the option D $5,825
First of all, we need to find the slope of the given line, writing it in the
form and reading the
coefficient:

So, the slope is 
If a line with slope
is perpendicular to a line with slope
, the following relationship holds:

So, the slope of our line must satisfy

So, we need the equation of a line with slope 1 and passing through (4,7). Given the slope
and a point
of a given line, its equation is given by

So, if you plug your values, you have

4(m)=4m
3(2)=6
Leaving you with:
4m+6+15
You can only combine like terms therefore 4m can not be added to 6 or 15 because of the variable m
4m+21
First add 15 to both sides:
2n = 68
Then divide each side by two.
n = 34