On January 22, 2017, the cost to mail a letter in the US was raised from 47

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On January 22, 2017, the cost to mail a letter in the US was raised from 47 cents to 49 cents. Find the relative change in the cost.

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Applied Calculus

ISBN: 9781119275565

6th Edition

Authors: Deborah Hughes Hallett, Patti Frazer Lock, Andrew M. Gleason, Daniel E. Flath, Sheldon P. Gordon, David O. Lomen, David Lovelock, William G. McCallum, Brad G. Osgood, Andrew Pasquale

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