exam Maths Puzzle Numerical Ability

I am having a hard time with this one.

9x^2=14

Read Solution (Total 0)

exam Other Question

For number Ten, i am supposed to draw a scatter plot showing the relationship between the percentage not covered by health insurance in 1990 and the percentage not covered in 1999. Find x-intercepts of f(x)=4x^2-28

The answer I got is -sqrt7, sqrt 7

Is this right?