The first 3 are correct but for the last one I’m not sure
(n*3)+6-(n*2)=n+3
3n+6-2n=n+3
3n-2n-n=3-6 every n on the left and free numbers on the right
0=-3
contradiction, there are no solution
2(3+3) or 2(3)+6, so the answer is the third option. It’s just using the distributive property.
Answer: (if your asking for the unit rate of that)
the unit rate is 1.10
