I need help with these four questions

Find the limit. Use I'Hospital's Rule where appropriate. If there is a more elementary method, consider using it. lim V x - 9 x-81 x - 81 Submit Answer 11. [-/1 Points] DETAILS MY NOTES SCALC9 6.8.015. Find the limit. Use I'Hospital's Rule where appropriate. If there is a more elementary method, consider using it. e/t - 1 lime t- 0 sin(t) Submit Answer 12. [-/1 Points] DETAILS MY NOTES SCALC8 6.8.069. Use I'Hospital's Rule to find the exact value of the limit. lim (1 + 8 )* Submit Answer 13. [-/1 Points] DETAILS MY NOTES SCALC8 6.8.051. Find the limit. Use I'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim 3x x-1 x - 1 In ( x )