Answer:
the answer is the 3rd & 5th one for anyone doing this question ; )
Step-by-step explanation:
I just did this question
It's right i just checked
So if 2 notebooks cost 12 divide that
12/2 =6 $ each
So to check if its true the 3notebooksx $6 dollars each should =$18 for 3 notebooks
5 notebooks at $6 each = $30 for 5 notebooks
so What is 4notebooks x$6 each ? =4x6 = $24 for 4 notebooks
(3a-7)^2
1. 9a^2-21a-21a+49
2. 3a(3a-7)-7(3a-7)
3. (3a-7)(3a-7)
4. Combine like terms
Well 16x12=192 then subtract it by 8 and 184 rolls were eaten! OMG
