I would say A because you would expect that less than half of them are out of state as more then half in the study are in state.
Add up the legnths of the cable then multiply by 1.5
35+50=85
85 times 1.5=127.5
the answer is $127.50
For this case we have that by definition, the equation of the line in a slope-intersection form is given by:

Where:
m: It's the slope
b: It is the cut-off point with the y axis
We have the following equation:

Thus, the slope is 
By definition, if two lines are perpendicular then the product of the slopes is -1.

We find

Thus, the equation of the line is:

We substitute the given point to find "b":

Thus, the equation of a line perpendicular to the given line and passing through the given point is:

Answer:

The altitude is the mean proportional between the left and right parts of the hyptenuse
20/m = m/8
m² = 20 · 8
m² = 160
m = √160
m = 4√10