Final answer:
The equation P = 4C - 100 is a linear function of C.
Step-by-step explanation:
According to the given equation, P = 4C - 100, where P represents the amount made from selling the candy bars and C represents the number of candy bars sold. The equation P = 4C - 100 is a linear function of C. This is because it follows the form of y = mx + b, where m is the slope of the line (4 in this case) and b is the y-intercept (-100 in this case).