Question

Sabah has $450 to pay for college textbooks. She expects to pay about $75 per book. Her friend told her that 4 of them can be checked out of the library for free.

Complete the equation below to find the total number of books that Sabah can get for her classes. Use b to represent the total books.

The equation has to look like this format: ?(?-?)=?
You can use any of these numbers to fill in the equation: 4, 10, 75, 300, 450, b

Answer 1

B

Explanation:

The answer would be

75 (b - 4) = 450

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Answer 2

b is the number of books.
She does not have to pay for 4 books, so the number of books she will pay for is b - 4.
Each book costs $75, so b - 4 books cost 75(b - 4).

75(b - 4) = 450