Posted by Carly on Monday, September 24, 2012 at 6:39pm.
A used bookstore sells paperback fiction books in excellent condition for 2.50$ and In fair conditions for 0.50$. Write an expression for the cost of buying (e) excellent condition paperback and (f) fair condition paperback.

Math  PsyDAG, Tuesday, September 25, 2012 at 1:34pm
$2.50e + $.50f = cost
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