A manufacturer of microcomputers produces four models: Portable, Student, Office, and Network. The profit per unit on each of these four models is $$500,$ $$350,$ $$700,$ and $$1000,$ respectively. The models require the labor and materials per unit shown in the table. Furthermore, the manufacturer needs to produce at least $150$ microcomputers of student and office models. Formulate this product mix problem using linear programming. Portable Student Office Network Total Labor $($hrs$/$week$)55684000$ Chassis $($unit$/$week$)1111400$ Disk Drive $($unit$/$week$)2121300$ Hard Disk $($unit$/$week$)---120$ Memory Chip $($unit$/$week$)168326422,000$ Circuit Bds$.($unit$/$week$)112410,000$