Answer:
Jillian is incorrect because
is equal to 5, which is a rational number.
Explanation:
A number is called rational number if it can be defined in the form of
, where p and q are integers, q≠0.
I real number is called irrational if it cannot be defined as in the form of
.
The given number is

It can be written as


is equal to 5, which is a rational number.
Therefore
is a rational numbers and Jillian is incorrect.