FlyVIP is a company that offers memberships for access to chartered private jets. They are trying to decide the optimal price for their membership fee and are considering using a two-part tariff. They estimate individual consumer demand to be: Q = 100 - 0.1P (or P = 1000 - 10Q), where Q is the number of charted jet flights per year and P is the price per flight. If the marginal cost of serving each customer is $250 per flight, what is the optimal two-part tariff that FlyVIP should charge