Previous Problem Problem List Next Problem (6 points) The linear function y = 2x + 30 models the average cost of a haircut in a certain city, where y, is the average price of a haircut years after 1985. Find the slope for the model. Then describe what this means in terms of the unit rate of change in the average cost of a haircut over time am= b) The average cost of a haircut in this city (Enter. increased or decreased or not changed ) at a rate of per year after 1985 If you haven't answered the question correctly in 3 attempts, you can get a hint Note: You can earn partial credit on this