Continuing Exercise 121, use to find the regular price of an item that costs $19.62 on sale.

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Continuing Exercise 121, use  to find the regular price of an item that costs $19.62 on sale.


Data from Exercise 121:

A store is discounting all regularly priced merchandise by 25%. Find a function f that computes the sale price of an item having a regular price of x. If an item normally costs $56.24, what is its sale price?

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