Question

The equation y = x2 - 12x + 45 models the number of books y sold in a bookstore x days after an award-winning author appeared at an autograph-signing reception. Use Desmos to answer your question.What was the minimum number of books sold? ___ booksHow many days after the autograph-signing reception did this "minimum" occur? ___ days

Answer 1

Answers:

9 books

6 days

Step-by-step explanation:

The given equation is

y = x² - 12x + 45

So, the graph of this equation is

Then, the minimum point of the graph is (6, 9). It means that the minimum number of books sold was 9 books and it was 6 days after the autograph-signing reception

So, the answers are:

9 books

6 days