The answer is C because the 2x outside of the brackers must be negative to produce the beginning term. The next terms are positive and two negatives make a positive, therefore we can conclude that there must be a negative inside the brackets too.
It's already in it's simplest form and so you can't reduce anymore
12x+1=-7
-1 -1
12x=-6
/12 /12
x=-1/2 or x=-0.5
I believe its B
i hope this helps :)
Answer:
It would take them 64 hours. However, this is only true if they decrease by two in the end. The question is not very specific.
