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Mathematics, 06.01.2021 18:10 genyjoannerubiera

Which situation can be represented by 4x + 20 = 9x ? The price of 9 books is $20 more than the price of 4 books. What is the price of a book?
The price of 4 books is $20 more than the price of 9 books. What is the price of a book?
The price of 9 books equals $24. What is the price of a book? Joyce bought x number of $4 books and $9 books. She spent $20. How many books of each price did she buy?

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