Bill wants to determine his blood type, so he takes a few dr…

Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A sera but not with the anti-B or anti-D sera. What does this mean? (sera is a clotting factor.

A country is currently creating 40 million tons of toxic was…

A country is currently creating 40 million tons of toxic waste per year. The table below shows the marginal costs and benefits of reducing the amount of toxic waste to various amounts.     Total Cost (in thousands of dollars) Total Benefits (in thousands of dollars) Marginal Cost Margina l Benefit Total Benefit Minus Total Cost 40 million tons Current situation Current situation — — — 30 million tons 50 800 50 800 Gain of 750 20 million tons 150 X 100 700 Gain of 1,350 10 million tons 500 1,850 350 350 Gain of 1,350 0 tons 1,200 2,000 700 150 Gain of 800  What number belongs in place of X?

The government distributes food stamps that can only be used…

The government distributes food stamps that can only be used to acquire food to low-income families. The budget line graph will show food on the horizontal axis and everything else on the vertical axis. After receiving food stamps, Ted’s family is able to consume the same amount of food. The new consumption point for Ted’s family will be: