I may be wrong, but I think it's Antibodies.
In 1895, Wilhelm Rontgen, a German Physicist discovered the x-ray.
The muscular system is made up of over 600 muscles. These include three muscle types: smooth, skeletal, and cardiac. Only skeletal muscles are voluntary, meaning you can control them consciously.
Answer:
2(x+3)+4(5+x)
2x+6+20+4x
6x +80
Explanation:
1.Distribute
2.Add x bc x can't add to normal #'s
3.Add normal #'s
4. Then you get : 6x+80 Bc you can't add these together
