Question

Which number is equivalent to 16?

Answer 1

$16^2$
$16*16$
$256$
$A$

$7x-1=9$
$7x-1+1 = 9+1$
$7x=10$
$\frac{7x}{7} = \frac{10}{7}$
$x= \frac{7}{10}$
$C$

Answer 2

1) I think you meant 16^2. That's 4^4, so it would be 64*4 which is 256, A
2) 7x-1 = 9
7x=10
x=10/7
C