What is the domain of the function f(θ)=1θ+8f(\theta) = \frac{1}{\theta + 8}f(θ)=θ+81?
All real numbers except θ=8\theta = 8θ=8
All real numbers except θ=−8\theta = -8θ=−8
All real numbers
θ>0\theta > 0θ>0