The unit price is $1.23 (I think!!)
Add 11 + 16. Plug in 11 into b-2 since b equals eleven. You should now have 11+16+11-2. Do the same thing and plug in 16 for c and 11 for b for c-b. Your solution will now be 11+16+11-2+16-11.
The answer is ( x - 3 ) ( x - 5)
I cant read this. This question is not in english.