Hello, just need help with three questions. Unsure how to solve the first one. Attempted the second one but part two was incorrect. And the third one... im unsure which are incorrect.

(1 point) Compute the following limit using I'HVopital's rule if appropriate. Use INF to denote co and MINF to denote -co. X-+00 lim ( V x - 7x - x) =(2 points) N W E S Suppose a police officer is 1/2 mile south of an intersection, driving north towards the intersection at 50 mph. At the same time, another car is 1/2 mile east of the intersection, driving east (away from the intersection) at an unknown speed. The officer's radar gun indicates 30 mph when pointed at the other car (that is, the straight-line distance between the officer and the other car is increasing at a rate of 30 mph). What is the speed of the other car? Speed = 92.42 mph. Now suppose that the officer's radar gun indicates -30 mph instead (that is, the straight-line distance is decreasing at a rate of 30 mph). What is the speed of the other car this time? Speed = 0 mph.{5 points] Gonsiderthe function f(x] = 5(x 3)\". For this function there are two important intervals: (00. A) and (A, no) where A is a critical point. Find A 3 For each of the following intervals, tell whether x) is increasing {type in INC} or decreasing {type in DEC]. (60.11): DEC [21. 00}: me For each of the following intervals, tell whether x) is concave up {type in Cu] or concave clown [type in CD]. (00.11): CU (A! 00}: CD Note: you can earn partial credit on Hus problem. Preview My Answers Submit Answers You have attempted this problem 1 time. Your overall recorded score is 80%. You have 5 attempts remaining