Which answer choice describes a function that takes an input, adds $6,$ and then multiplies by $3?$ f$($x$)=6$x$+3$ f$($x$)=3$x$+6$ f$($x$)=3($x$+6)$ f$($x$)=6+($x$*3)$ f$($x$)=6($x$+3)$ Save Answer