The cost C (in dollars) of making a square window with a side length of n inches is represented by C=n25+175. A window costs $355. What is the length (in feet) of the window?

2.5 feet

The length of the purchased window is n = 30inches

Using rule: one feet is equal to 12inches, or one inch is equal to 1/12 feet, we get n = 30 x 1/12 feet = 30/12 which is equal to 2.5 feet

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