<PRE><B>Question 1032157</B>
A transaction is positive if there is a sale and negative when there is a return. Each time a customer uses a credit card for a transaction, the credit company charges Isabel. The credit company charges 1.5% of each sale and a fee of 0.5% for returns. 
a) Let x represent the amount of a transaction and let f(x) represent the amount Isabel is charged for the transaction. Write a function that expresses f(x). 
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Charge on sale:: 0.015*x
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Charge on reture:: 0.005x
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Cheers,
Stan H.
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