Question

What is the domain of the function f(x)=x^2+3x+5?

OA
all whole numbers
OB.
all positive real numbers
O c. all integers
OD. all real numbers

Answer 1

The domain of this function is all real numbers

Explanation:

Unless there is a domain restriction for the function, the domain of a function is all real numbers. This means that all we need to do is determine whether there is a domain restriction.

The things that cause a domain restriction are: an x in the denominator of a fraction like
`f(x)=(1)/(x)` or a radical like
`f(x)=√(1-x)`

As there are no variables in the denominator or a radical, we can conclude that the domain of this function is all real numbers.

Answer 2

all real numbers

Explanation: