The question has no domain restriction therefor the answer is C. All real numbers.
Answer:

Step-by-step explanation:
we know that
The standard form of the quadratic equation is equal to
we have

eliminate the parenthesis

group terms that contain the same variable

combine like terms

Answer:
x = 5
Step-by-step explanation:
4x + 3 = 23
Subtract 3 from both sides;
4x = 20
Divide both sides by 4;
x = 5
The calculated average of a data set best describes A: Mean.