Question $1$:

Which of the following is a valid function header?

$1)$ Function out $=$ hello$($howdy$)$

$2)$ function in $=$ blah$($out$)$

$3)$ function $[$out$1,$ out$2]=$ randomThing$($in$1$ in$2)$

$4)$ function out $=$ myFunc$(30)$