SECTION 2

When Roberta Wagner first launched e-Tire she thought that she had a home run on her hands.

It had always been hard to buy bicycle tires online; e-tire would be a one-stop marketplace for

bicycle tires, matching bicycle tire producers with customers. But Wagner wasn't clear on one

important detail: how to set the prices at which the producers would sell to consumers. So,

Wagner did some market research. She surveyed tire producers and came up with a model for

supply. Given the price for bicycle tires, p, suppliers would be willing to sell 650 + 5 x p tires.

Meanwhile, Wagner's market research led to a simple equation for consumers' demand for

tires. Given a price, p, consumers would want 1,000 - 2 x p bicycle tires.

At the launch of e-Tire, Wagner decided to set up e-Tire with a very simple interface. The

website simply required a fixed price for each tire sold: $30.

Question 1

At a price of $30 per tire, how many tires are demanded? tires.

Note: If needed, round to the nearest whole number. For example, if your solution to the

problem is 12,345.67, then submit 12346 as your answer.