Question 471014
Find the domain and range algebraically 
g(t)=(2)/(sqrt(t+4))
**
g(t)=(2)/(sqrt(t+4))
y=2/√(t+4)
t+4>0
t>-4
Domain: (-4, ∞)
..
solve for t
√(t+4)=2/y
(t+4)=4/y^2
t=(4/y^2)-4
Range: (0,∞)