Plan	A	B
fire/theft	21,000	34,000
liability	156,000	132,000
monrthly premium	80	72

Premiums are sold in units. For example, one can buy one unit of plan A insurance for $80 $ 80 per month and receive $21,000 $ 21,000 in Theft/Fire insurance. Two units of plan A insurance cost $160 $ 160 per month and give $42,000 $ 42,000 in Theft/Fire insurance. The company wants at least $689,000 $ 689,000 in coverage for Theft/Fire insurance and $3,792,000 $ 3,792,000 in coverage for liability insurance. How many units of each plan should be purchased to meet the needs of the company while minimizing cost? The company should purchase__units of plan A and __units of plan B. What is the minimum monthly premium for the company? (Note: your answer is a dollar amount and should include a dollar symbol).