Older unanswered questions.
Commercial maths - I should do this one
http://web2.0calc.com/questions/katherine-uses-her-credit-card-to-purchase-a-new-television-for-709-15-she-can-pay-off-up-to-350-per-month-the-card-has-an-annual-rate-o
http://web2.0calc.com/questions/effective-force
http://web2.0calc.com/questions/to-find-the-locus-of-images-of-complex-numbers-z-for-which-w-is-true
deleted deleted All answered.
+118723 
