$(50$ points$)$ For the circuit in the figure fill the following table.

a$.(10$ points$)$ How many nodes does this circuit have? $q,$ Nodes $($answer here$)$

b$.(40$ points$)$ Fill the following table:

$\backslash$table$[[$Variable$,$Value,Units,Points$],[$Vx$,,$V$,8],[$Ix$,,$mA$,8],[$V$3,,$V$,8],[$Current flowing in resistance R$4,,$mA$,8],[$Prower absorbed by R$1,,$mW$,8]]$