The debate team is showing a video of their recent debate. the first showing begins at 3: 15 p. m. the second showing is scheduled at 4: 50 p. m. with a 1/2-hour break between the showings. explain how you can use a number line to find the answer.

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?