Answer:15
Step-by-step explanation:
That is false... coefficients in polynomials can lead in either positive or negative

It looks like your first selection (a) is appropriate.
Answer:
By using cross multiplication
Step-by-step explanation:
Answer:
All real numbers
Step-by-step explanation:
The domain of the function represented by f(x) = x + 1 is the all real numbers as there is only addition involved in the function so putting any number as input will not lead the function to infinity.