Which answer choice describes a function that takes an input, adds $2,$ and then multiplies by $4?$ f$($x$)=2$x $+4$ f$($x$)=4$x $+2$ f$($x$)=4($x$)(+2)$ f$($x$)=2+($x$)(-4)$ f$($x$)=2($x$)(+4)$