Mathematics, 08.07.2019 11:30, Krazyyykiddd

In 1988 a postage stamp cost $.27. in 1992 a postage stamp cost $.31. find the average rate of change in the postage. answer in units of cents/year.

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In 1988 a postage stamp cost $.27. in 1992 a postage stamp cost $.31. find the average rate of chang...