For every dollar spent on advertising pharmaceuticals, revenue increases by about $4.20 (CNN, December 17, 2004). If

Question:

For every dollar spent on advertising pharmaceuticals, revenue increases by about $4.20 (CNN, December 17, 2004). If this number is accurate and the firms are operating rationally, what (if anything) can we infer about marginal production and costs?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...