Real time system

Please solve by expert and make it clear to understand step by step and make your hand write clear

a) Calculate the schedulability of the given set of task using Time Demand Analysis. T= {(8,4), (12, 4), (20,4)} (7 marks) b) Conclude your calculation on the schedulability of the task in 1 a) and specify the name of the algorithm. (3 marks) QUESTION 2 a) Draw and analyze the Time Demand Function of the tasks to determine the schedulability of the following periodic Tasks: (3,1), (4,2), (6,1). (3 marks) b) Conclude your calculation on the schedulability of the task in 2 a) and specify the name of the algorithm. (3 marks) c) Can this graph be used to determine whether the tasks are schedulable according to an arbitrary priority-driven algorithm(YES/NO)? Justify your answer. (4 Marks)