Given the piecewise function f(x) = { 2x + 1, if x < 0; x² - 3, if x ≥ 0 }. What is f(3)?

✓ Correct Answer: Option B

Since x=3 is greater than or equal to 0, use the second rule of the function: f(x) = x² - 3. So, f(3) = 3² - 3 = 9 - 3 = 6.