The absolute value inequality that models the function is given by:
[tex]|x| = x, x \geq 0[/tex]
[tex]|x| = -x, x < 0[/tex]
In this problem, the leading candidate will receive 52% of the votes with a margin of error of no more than 5%. Hence, the difference between his percentage of votes x and 0.52 should be at most plus/minus 0.05, that is:
[tex]|x - 0.52| \leq 0.05[/tex]
Hence, option b is correct.
You can learn more about absolute value inequality at https://brainly.com/question/24005819