The linear function c = 2 y + 29 models the average cost of a haircut in a certain city, where c, is the average price of a haircut y years after 1995. find the slope for the model. then describe what this means in terms of the rate of change in the average cost of a haircut over time

C = 2y + 29
where
c = the average cost of a haircut,
y = years after 1995.

The slope for the model is 2.
It means that the average cost of a haircut increases by 2 every year after 1995

In 1995, y=0 and the cost is 29
In 1996, y=1 and the cost is 29+2 = 31
In 1997, y=2 and the cost is 29+4 = 33
and so on.