Two jewlery stores buy silver chains from a manufacturer for c dollars each and then sell the chains at a 57% markup. store a has a sale and marks down all chains by 20% off retail. in addition customers can use a coupon worth 15% off the price of any item including sale items. store b offers a coupon worth 35% off any one item. at store a aurelie used a 15% off coupon to buy a chain already marked down by 20%.write an expression for the price of this chain. at store b tucker’s used a 35% off coupon to buy a chain. write an expression for the price of this chain. which store offers a better price on chains?