Need help on those 2 ! Please help

6(2x+y)+2(x+4y) how can i solve this

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)