
Start with the original function:

Substitute in the known value:

Multiply:

Add:

Answer:
A and D’s area is 50
B and F’s area is 120
C and E’s area is 60
Adding all of the areas together will give you a surface area of 460
The answer is C, a perpedicular bisector. The distances of the mark along the given line are equidistance. Where the x is located, where the two dashes would intersect is where a 90 degre angle to the line would pass through.