Answer
$9(3x),$
simplifies to $27x$
Work Step by Step
" nine times..."$\rightarrow 9\cdot(...)$
"...the product of $3$ and a number" $\rightarrow (3x)$
the expression translates to$:\qquad 9(3x)$
Using the associative property of multiplication,
$9(3x)=(9\cdot 3)x$
$=27x$