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How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

How do you determine if an ordered pair is a solution to a given equation?