he quantity demanded of a certain brand of TV is 3000 per week when the unit
price is $485. For each decrease in unit price of $20 below $485, the quantity
demanded increases by 250 units. The suppliers will not market any TVs if the
unit price is $300 or lower. But at a unit price of $525, they are willing to make
available 2500 units in the market.
I don't mind helping to find answers, but I resent having to provide the questions as well.
but I will say that revenue = price * quantity,
each a function of the number of $20 price increases