Gina is asked to identify a rational expression. Which of the following could she choose?(1 point)

1. 8x^2+7/0
2. 5.3/2x-1
3. x 3/2+5/2x^9
4. 9x-4/8+x

1 answer

The answer that Gina could choose is option 4: 9x - 4/8 + x.