Solve 7,8 and 9 please

W A Find the inverse Laplace trnsform of F (s) = 63s2 + 30s + 1655 (s - 3)2 ($2 + 25) f ( t ) = *symbolic formatting help Submit Answer 8. [-/10 Points] DETAILS Find the inverse Laplace trnsform of s - 9 F (s) = 2_ 6s + 18 f (t ) = symbolic formatting help Submit Answer 9. [-/18 Points] DETAILS Solve the 1st-order linear non-homogeneous DE, y' - 2y = cos (4 t) subject to the initial conditions y (0) = 3, using Laplace Transform. Simplified form of Lapalace Transform Y (s ) = The partial fraction form of Y (s) is Y (s ) = The general solution of the non-homogeneus equation is y (t ) =