Mathematics, 20.04.2020 05:54 Broov

The equitation y=x^2-12x+45 models the number of books y sold in a bookstore x days after an award winning author appeared at an autograph signing event. How many books were sold 12 days after the author appeared at the event?

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The equitation y=x^2-12x+45 models the number of books y sold in a bookstore x days after an award w...