8 increased by 20% is 9.6 i hope this helps :)
For this case we have that by definition, the equation of a line in the slope-intersection form is given by:

Where:
m: It is the slope of the line
b: It is the cut-off point with the y axis

We have the following points:

Substituting we have:

Thus, the equation is of the form:

We substitute one of the points and find "b":

Finally, the equation is of the form:

Answer:

If you round 3,826.301 and 175.6 to the nearest hundred you will get 3,800 and 200.
Multiply 3,800 * 200 = 760000
760,000 rounded to the nearest hundred thousand is 800,000.
The best estimate for the product 3,826.301 × 175.6 is B. 800,000.
I think it’s either 8 or negative 8