Question

(THIS IS COPY ND PASTE)

Brett has a $30 online gift voucher. He plans to buy as many books as he can. The cost of each book is $4. There is also a single shipping charge of $2. How many books can he afford without spending more than his gift voucher amount?

its an inequality eqution, i already know he can spend 30 or less on the boook

Answer 1

30 > 4x + 2 and 6 books

Explanation:

• read the question and set up the inequality
• let x = number of books he can afford

30 > 4x + 2

• 30 would be on one side since that's the most he can spend
• 4x because each book is $4
• + 2 because there is a charge of $2

30 > 4x + 2

28 > 4x

7 > x

• he can afford 6 books
• it cannot be 7 because if he does buy 7 books, it would cost more than $30