Kiran says we should add the constraint 1 is greater than or less than 0 1. What is the reasoning behind this constraint?
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2. What other "natural constraint" like this should be added?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Describe what moves you could use to create the transformation of the original image shown at right

43lbs of tomatos cost $387. how much would 41lbs cost