State University must purchase 1100 computers from three vendors. Vendor 1 charges $500 per computer plus a total delivery charge of $5000. Vendor 2 charges

$350 per computer plus a total delivery charge of

$4000. Vendor 3 charges $250 per computer plus a total delivery charge of $6000. Vendor 1 will sell the university at most 500 computers, vendor 2, at most 900, and vendor 3, at most