Finished setting up basic equations
Merge branch 'master' of https://github.com/alexabbott/business_guide into Brian'sBranch
Merge pull request #12 from alexabbott/Brian'sBranch

Brian's branch
Merge branch 'master' of https://github.com/alexabbott/business_guide
Merge branch 'ericsbranch' of https://github.com/alexabbott/business_guide
commit
d3 looking ok