Question

What are the solutions to the equation 9x2 = 49, rounded to the nearest tenth?

Answer 1

I would go for A if anything

Answer 2

A.
2.3, –2.3

Working;
$9x^{2} =49$
$x^{2} = \frac{49}{9}$
x=$\sqrt{ \frac{49}{9} }$
x= +-2.3