Which expressions are equivalent to -5 - (2.5 + 7)? Select all that apply.
A. (2.5 + 7) - 5
B. -(2.5 + 7) - 5
C. (2.5 + 7) + 5
D. -5 - (7 + 2.5)
E. -(5 - 2.5) + 7
F. -5 + (-2.5 - 7)
G. -5 + (-2.5 + 7)

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?