The best answer I believe is C
Y=4x-14 to find the slope you need to do
rise/run and to find b you need to see where the line crosses the y axis
16,250 Sq Feet i pretty sure its that one
The base would represent the side adjacent to the angle and the height up the wall would be the opposite side. Using the tangent^-1 (opposite over adjacent) function we are looking for the tan^-1 of 6/24 or 14.04°