marlena paid the cashier $20 to buy 4 pairs of earrings. The cashier gave her back $0.04 in change . Each pair of earrings is th
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Answer:
Step-by-step explanation:
Problems like this require that you recognize that the denominator of the right term is a factor of the denominator of the left term. That is, you're supposed to know how to recognize and factor the difference of two squares.