What is the range of f(z)=∣z∣+4f(z) = |z| + 4f(z)=∣z∣+4 for all real numbers?
All real numbers
f(z)≥4f(z) \geq 4f(z)≥4
f(z)>4f(z) > 4f(z)>4
f(z)≤4f(z) \leq 4f(z)≤4