not sure where to start on this I have other similar questions

Section 6.1 Laplace Transform: Problem 1 (1 point) Previous Problem Problem List Next Problem a. Set up an integral for finding the Laplace transform of f(t) = t - 18. F(s) = Ctf(t)} = help (formulas) A where A = and B = b. Find the antiderivative (with constant term 0) corresponding to the previous part. c. Evaluate appropriate limits to compute the Laplace transform of f(t): F(8) = C{f(t)} = d. Where does the Laplace transform you found exist? In other words, what is the domain of F(s)? help (inequalities)