All real domain and range

What is the range of the following graph?

• all real numbers
• all integers
• any real number greater than zero
• it can not be determined

What is the DOMAIN of this function?

• -∞ ≤ x ≤ ∞

• -∞ ≤ x ≤ ∞

• ∞ < x < ∞

• -∞ < x < ∞