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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Sara’s income is $12 a week. The price of popcorn is $3 a bag, and the price of cola is $1.50 a can. The figure shows Sara’s preference map for popcorn and cola.

What quantities of popcorn and cola does Sara buy? What is Sara’s marginal rate of substitution at the point at which she consumes?
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