Answer:
The raise the Camden will get each year.
Explanation:
y = mx + b, where m is the slope.
If n is the years worked it would not be the amount of money made after the initial hiring because it would not fit for every year. N is replacing x in equation.
The variable b would be the amount of money that is given when hired this is because it does not depend on how many years worked. So it is a one time only thing just like stated in the equation.
M proves that Camden will get money x the years that hew worked. The raise seems to fit this the best because it is the only one that is able to be repeated.