Azul bought 10 reams of paper at the store for a total of 84$. the tax was on the purchase was 4$. what was the cost of each ream? which equation could be used to represent this situation?
a.10r-84=4
b.10r-4=84
c.10r+4= 84
d.4-10r=84

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?