Which of the following statements are true ? !

ANSWER

Both

are rational.

EXPLANATION

Recall that, a rational number can be written in the form

and also, a and b, are integers.

This means that, if the expression can be written as a common fraction, then it is a rational number.

Let us see whether we can rewrite the given expressions as common fractions.



also,



Therefore the given expressions are all rational.

The correct answer is A.

Number nine is f(x)= 40x : ) hoped i ya