Question License

Question ID 146522 (Universal ID 1500407905640766)

This question was written by de Vries,Spencer, mb Day,Alyson, derived from work by de Vries,Spencer; WebWork-Rochester. 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.