What is the focus of a command-and-control approach to reducing pollution? a. the government imposing quantitative limits on the amount of pollution firms are allowed to generate. b. the government offering subsidies intended to bring about an efficient level of output in the presence of externalities. c. the government trading emissions allowances to pollute for cash payments. d. the government imposing taxes intended to bring about an efficient level of output in the presence of externalities.

The solution set for -18 < 5x-3 iso-3х3< xо-3хo3 > x

The prebisch–singer hypothesis concludes that: a. technology lowers the cost of manufactured products, so developing countries should see an increase in their terms of trade. b. developing countries experience a long-run decline in their terms of trade, as the demand for primary products in higher-income countries declines relative to their demand for manufactured goods. c. because of unfair trading practices, labor in developing countries is exploited. d. opec has been responsible for a slowdown in the world's standard of living.

Solomon chemical company makes three products, b7, k6, and x9, which are joint products from the same materials. in a standard batch of 320,000 pounds of raw materials, the company generates 70,000 pounds of b7, 150,000 pounds of k6, and 100,000 pounds of x9. a standard batch costs $3,840,000 to produce. the sales prices per pound are $10, $14, and $20 for b7, k6, and x9, respectively. (a) allocate the joint product cost among the three final products using weight as the allocation base. (b) allocate the joint product cost among the three final products using market value as the allocation base. (c) allocate the joint product cost among the three final products using weight as the allocation base.