Question License

Question ID 142136 (Universal ID 1495148384230462)

This question was written by Day,Alyson, mb Masters,Math, derived from work by Day,Alyson; Lippman,David. This work is licensed under the IMathAS Community License (GPL + CC-BY).
The code that generated this question can be obtained by instructors by requesting an instructor account on MyOpenMath.com.