Final answer:
To solve for x, substitute the given information into the equations and solve the system of equations.
Step-by-step explanation:
To solve for x, we can use the given information:
C = 7x + 11
n = 7x - 27
f = 4x - 7
We can solve this system of equations by substituting the value of C, n, and f into each equation:
7x + 11 = 7x - 27
4x - 7 = 7x - 27
Now, we can simplify and solve for x:
7x - 7x = -27 - 11
4x - 7x = -27 + 7
0 = -38
-3x = -20
x = 20/3
So, the value of x is not one of the given options.