Math Quiz: NYT Learning Network

Through Math for America, I am part of an on-going collaboration with the New York Times Learning Network.  My latest contribution, a Test Yourself quiz-question, can be found here:

https://learning.blogs.nytimes.com/2011/10/19/test-yourself-math-oct-19-2011/

This question is about the costs of providing  educational technologies, such as the math software Cognitive Tutor, to  students in the United States.