Myrtle Air Express decided to offer direct servide from Cleveland to Myrtle Beach. Management must decide between a full-price service using the company's new fleet of jet aircraft and a discount service using smaller-capacity commuter planes. It is clear that the best choice depends on the market reaction to the service Myrtle Air offers.

Management developed estimates of the contribution to profit for each type of service based on two possible levels of demand for service to Myrtle Beach: strong and weak.

The following table shows the estimated quarterly profits (in thousands of dollars):

	Demand for Service
Service	Strong	Weak
Full Price	$900	-$400
Discount	$480	$300

Suppose that management of Myrtle Air Express believes that the probability of strong demand is 0.70 and the probability of weak demand is 0.30. Use the expected value approach to determine an optimal solution.

What is the expected value of the optimal choice? (Round to the nearest whole number.)