8.33.3 Can you answer these questions?

8.33.3.1 Multiple opaque objects occlude lines when they shouldn't

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=274597

When more than 4 translucent objects overlap, they occlude any lines plotted behind them, no matter how small I make the opacity. Interestingly, while changing the 3D view, the line disappears behind ... 
[graphics3d] [rendering] [opacity] [parametricplot3d]
 

asked by user34722 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34722 Score of 1

8.33.3.2 CoefficientList for unbounded list of variables

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=274650

Consider a polynomial:  expr = Sum[x[k] a[k] + x[k], {k, 0, K}]; 
I want to determine the coefficients for variables  x[k]  for each ... 
[coefficients]
 

asked by Belfaunder https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=88572 Score of 2

8.33.3.3 CMake undefined when running C++ process in Mathematica

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=274663

I'm trying to run C++ code through Mathematica. So far, I have: 
... 
[c++]
 

asked by burntclaw https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=87169 Score of 1