Exam 1: Functions and Graphs

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Solve the problem. -Anne and Nancy use a metal alloy that is 18.6% copper to make jewelry. How many ounces of a 12% alloy must be mixed with a 23% alloy to form 75 ounces of the desired alloy?

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Fill in the blanks to complete the statement. -The graph of y=x+7y = - \sqrt { x + 7 } can be obtained from the graph of y=xy = \sqrt { x } by shifting horizontally ?? units to the ?? and reflecting across the ?-axis.

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