(x + 8.92) - (0.75 - y ) + z = 11.89 x options = -5.67 or 5.67 y options = 1.25 or -1.25 z options = -3.2 or 3.2

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?