Notel Chips manufactures computer chips. Its two main customers, HAL Computers and Peach Computers, just submitted orders that must be filled immediately. HAL needs at least 130 cases of chips, and Peach needs at least 150 cases. Owing to a limited supply of silicon, Notel cannot send more than a total of 300 cases. If shipping costs $100 per case for shipments to HAL and S90 per case for shipments to Peach, how many cases should Notel send to each customer to minimize shipping costs? What shipping costs would this entail?