Which of the following is not a power of congress? a. to establish post offices. b. to maintain postal roads. c. to maintain a state road. d. to issue a patent.

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.

How do the public-safety regulations protect workers ? regulations create advertising laws

For each of the six basic tactics, select the set of action steps (a to f) that describe the tactic. answers