I guess choice D is the best answer.
It is a dependent variable <span>is NOT true about an explanatory variable.</span>
Answer:
You can't "solve" it but you can simplify it. When I factored it, I got -3(x+112).
First way: m+7m+m+7m
Second way: m(1+7+1+7) (factorize)
Third way: 2(m)+2(7m)
3/8>3/12
Solve: The least common denominator is 24
Comparing 9/24 and 6/24:
9/24 > 6/24
therefore
3/8 > 3/12