1:27 AM Wed Sep 27 . . . 60% 1622860202-Unit 4 Test MCV4U Done Part 4: Application [12 marks] 29 . Find the equation of the tangent to the curve y = 4x - tan x at the point where x = . [6 marks] 30. The population of a bacterial culture was 5000 bacteria after 15 min and 40 000 bacteria after 1 h. a) After how many minutes will the population reach 150 000 bacteria? (3 marks) b) Find the rate of growth after 15 min. Express your answer as bacteria per hour. (3 marks)1:27 AM Wed Sep 27 . . . 60% 1622860202-Unit 4 Test MCV4U Done 8 5 of 6 e) y = ecos(*) sin(2x - 1) [2 marks] ... 28. The displacement of an object attached to the end of a spring can be modelled by the function h(!) = 2.4 cos 12t+ , where h is the height of the object from the floor, in centimetres, and t is the time, in seconds. Determine the acceleration of the object at time t