suppose a market research company finds that aqt a price of p=20.00, they would sell x=42 tiles each month. If they lower the price to p=10.00, then more people would purchase the tile, and they can expect to sell x=52 tiles in a month's time. Find the equation of the line for the demand equation. Write your answer in the form p=mx+b. Hint; Write an euation using two points in the form (xp).