Suppose u={1,2,3,4,5,6,7,8,9,10} is the universal set and m={7,8,9,10}. what is m?

a. {1,2,3,4,5,6}
b. {1,2,3,4,5,6,7,8,9,10}
c. cannot be determined
d. {7,8,9,10}

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?