3 questions to be answered I need the answers separately and the work

Question 12 C5 pts 9 1 0 Details Evaluate the limit using L'Hopital's rule. Enter either a reduced fraction or DNE. lim 4 cos( - 3x)sec( - 7x) Question 13 5 pts 9 1 0 Details Evaluate lim I + 00 O Recall that in order to use I'Hopital's Rule, the limit must first be in or - form. 0O lim 5 .Question 14 C5 pts 9 1 0 Details A ball is shot from the ground straight up into the air with initial velocity of 40 ft/sec. Assuming that the air resistance can be ignored, how high does it go, to the nearest foot? The acceleration due to gravity is 32 ft per second squared