In any rational function the denominator should never equal to 0, hence in this case since the denominator is 5n the only answer is n should not equal 0
Answer: 
Step-by-step explanation:
We can use the Rational Root Test.
Given a polynomial in the form:

Where:
- The coefficients are integers.
-
is the leading coeffcient (
)
-
is the constant term 
Every rational root of the polynomial is in the form:

For the case of the given polynomial:

We can observe that:
- Its constant term is 6, with factors 1, 2 and 3.
- Its leading coefficient is 2, with factors 1 and 2.
Then, by Rational Roots Test we get the possible rational roots of this polynomial:

Answer:
2x + 5y = -5
Step-by-step explanation:
Since the new line is parallel to the given line 2x + 5y = 10, the equation of the new line has exactly the same form as does 2x + 5y = 10, except that the constant will be different.
Were we to solve this equation (in standard form) for y in slope-intercept form, we'd get:
5y = -2x + 10, or
-2x + 10
y = ----------------
5
or
y = (-2/5)x + 2
Writing out 2x + 5y = C, we substitute -5 for x and 1 for y, obtaining
2x + 5y = C => 2(-5) + 5(1) = -10 + 5 = -5. Therefore, C = -5 and the equation of the new line is
2x + 5y = -5
Qqqqqqqqooejeudmdjdmdndlsbelqbadmd
It’s C