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A state department of public safety added 13x2 + 5x miles of highway to connect CoolTown and Bragville. It cost the department 3x2 – 9x thousand dollars to complete each mile of interstate. Which expression shows the total cost, in thousands of dollars, of creating this highway?

1 Answer

1 vote

Answer:

x4 + 12x^3 – 45x^2

Explanation:

User Aaron Navies
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