Question

What is the domain of the function f(x)=x²+3x+5?

A. All whole numbers
B. All positive real numbers
C. All integers
D. All real numbers

Answer 1

D. All real numbers. The domain of the function f(x) = x² + 3x + 5 is all real numbers.

Step-by-step explanation:

The domain of the function f(x) = x² + 3x + 5 is all real numbers, which is option D. The domain of a quadratic function is always all real numbers, as the input variable x can take any real value. In this case, the function f(x) = x² + 3x + 5 is not restricted by any limitations.