Step 1 :The antiderivative of a function is the function whose derivative is the given function. In this case, we need to find the antiderivative of \(t(x)=-\frac{8}{x+4}\).
Step 2 :This is a simple case of finding the antiderivative of a function of the form \(\frac{1}{x}\), which is \(\ln|x|\).
Step 3 :However, we have a constant and a shift in the function, which we need to account for.
Step 4 :The antiderivative of \(-\frac{8}{x+4}\) is \(-8\ln|x+4|\).
Step 5 :Final Answer: The antiderivative of \(t(x)=-\frac{8}{x+4}\) is \(\boxed{-8\ln|x+4|}\).