Question

Find the value of the expression $2x$ for the given values of $x$:
$x=1,5,-6,\frac{3}{7}$

• A.
  $2,10,-12$ and $\frac{6}{7}$ respectively
• B.
  $\frac{6}{7},10,-12,$ and $2$ respectively
• C.
  $1,5,-6,$ and $\frac{3}{7}$ respectively

Answer 1

The correct option is A

$2,10,-12$ and $\frac{6}{7}$ respectively
Here the expression is $2x$. For any values of $x$ as input, the expression will produce the output as twice the input. Input ($x$) Output ($2x$)

$1$	$2\times 1=2$
$5$	$2\times 5=10$
$-6$	$2\times (-6)=-12$
$\frac{3}{7}$	$2\times \frac{3}{7}=\frac{6}{7}$

Hence the respective outputs are $2,10,-12,\frac{6}{7}$