Professor Kremepuff's New, User-Friendly Textbook Has Just Been Published

question 4

Multiple Choice

Professor Kremepuff's new, user-friendly textbook has just been published.This book will be used in classes for two years, after which it will be replaced by a new edition.The publisher charges a price of p₁ in the first year and p₂ in the second year.After the first year, bookstores buy back used copies for p₂/2 and resell them to students in the second year for p₂.(Students are indifferent between new and used copies.) The cost to a student of owning the book during the first year is therefore p₁ - p₂/2.In the first year of publication, the number of students willing to pay $v to own a copy of the book for a year is 50,000 - 1,500v.The number of students taking the course in the first year who are willing to pay $w to keep the book for reference rather than sell it at the end of the year is 50,000 - 7,500w.The number of persons who are taking the course in the second year and are willing to pay at least $p for a copy of the book is 45,000 - 1,500p.If the publisher sets a price of p₁ in the first year and p₂ <= p₁ in the second year, then the total number of copies of the book that the publisher sells over the two years will be

• A)100,000 - 1,500p₁ - 1,500p₂.
• B)100,000 - 1,500(p₁ - p₂/2).
• C)95,000 - 1,500(p₁ + p₂/2).
• D)100,000 - 4,500p₂.
• E)95,000 - 2,250p₂.

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Definitions:

Commercial Technology

Technology developed and used for business purposes, including the trade of goods and services.

Horizontal Gene Transfer

The movement of genetic material between unicellular and/or multicellular organisms other than through the vertical transmission from parent to offspring.

Rapid Evolution

The fast rate of genetic changes within populations or species, often in response to environmental stressors or changes.

Prokaryotes

Single-celled organisms without a nucleus, including bacteria and archaea, having DNA free in the cytoplasm.