The point of interest is where the graphs cross.
(x, y) = (11, 5)
_____
Linear equations can be solved by any of a variety of methods. Using substitution for y, you have
.. 7x +3(27 -2x) = 92
.. x = 11 . . . . . . . . . . . . . collect terms, subtract 81
Then
.. y = 27 -2*11 = 5
(2x - 5)(3x^2 - 4x +1)
6x^3 - 8x^2 + 2x - 15x^2 + 20x - 5
6x^3 - 23x^2 + 22x - 5
1/2 is half, so two halfs are in one inch?
B a negative and a negative is a positive