
has 2 oxygens for every carbon.

will contribute one of each for every molecule. You then have to have an even multiple of

molecules to not end up with an odd number of oxygens.
So if you take

, you should end up with 2 carbons on the RHS.

then has 4 oxygens. 2 of them are already accounted for, so you just need one

to balance out the reaction.
Scale factor = new length/old length
scale factor = 10/2.5 = 4
The scale factor is 4.
X= -2
look at the 6x-12 you divide -12 by 6 and get x=-2
Multiply 60 by .75, which gives you 45 Points. The answer is B.
37 would be the answer.....