30-09-2014
Mathematics

Answered

At an online bookstore, Kendra bought 4 copies of the same book for the members of her book club. She got free shipping because her total was at least $50. What was the minimum price of each book? ( inequality)

Answer :

30-09-2014

[tex]x-\ cost\ of\ one\ book\\\\ Total\ price\ is\ 4x\\\\ It\ should\ be\ greater\ than\ 50\$\\\\ 4x \geq 50\ \ \ |Divide\ by\ 4\\\\ x \geq 12,5\$\\\\ Each\ book\ cost\ at\ least\ 12,5\$.[/tex]

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