Score table of values using khan-exercises answer types.
Score table of values using khan-exercises answer types.

Test Plan: Check to make sure that correct answers score correctly,
invalid ones score invalid, and wrong ones score wrong.

Auditors: alpert

alexristich/perseus,sachgits/perseus,chirilo/perseus,iamchenxin/perseus,iamchenxin/perseus,daukantas/perseus,junyiacademy/perseus,ariabuckles/perseus,huangins/perseus,sachgits/perseus,abe4mvp/perseus,daukantas/perseus,ariabuckles/perseus,huangins/perseus,abe4mvp/perseus,ariabuckles/perseus,ariabuckles/perseus,alexristich/perseus,junyiacademy/perseus,learningequality/perseus,learningequality/perseus,chirilo/perseus