ok so here we go...

we have the set up which states that only students within a certain range, can use the trombone...

so 95 is less than equal to T which is less than equal to 185..

now this next part i found on the internet...but it was suggested that i find the middle of the range which is 140, and so i subtract 140 from each part of the setup???Attachment 24548

so now i have this inequality that i need to rewrite with the use of absolute value bars, but the only problem is that i do not know how to set that up...any help would be appreciated and can you explain why i need to find the middle of the range and why is that being subtracted from either side. thanks