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1 December, 09:44

Jay can buy a stereo either online or at the local store. If he buys online he gets a 15% discount, but has to pay a $12 shipping fee. At the local store, The stereo is not on sale, but there is no shipping fee. For what regular price is it cheaper for J to buy the stereo online

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  1. 1 December, 13:36
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    15% discount means u r paying 85% for it

    x = original price

    0.85x + 12 < x

    12 < x - 0.85x

    12 < 0.15x

    12/0.15 < x

    80 < x ... so for it to be cheaper online, it would have to cost more then 80 ... so 81 or higher
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