Assume the following two functions have be run in the Python shell$/$interpreter:

def math$1(x,y,z)$ :

$z=a+1$

$c=x+1$

$y=c+1$

return $x+y+z$

def math$2(a,b,c)$ :

$a=a+c$

$b=$math$1(a,b,c)$

$c=x+1$

return $a+b+c$