please help this probability and statistic question with steps, thank you

The distances (in km} travelled to work by the employees of a city follow a normal distribution with a mean of 7.45 km and a standard deviation of 3 km. {a} Find the probability that the distance travelled to work by a randomly selected employee from the city is between (6.4 + 3_) km and 9.5 km. Correct your answer to 4 decimal places. (3 marks) 10 {b} Find the probability that the average distance travelled to work by 5 randomly selected employees from the city is greater than (7.4 3Tb km. Correct your answer to 4 decimal places. (3 marks) (0} Suppose (10 + 3)% of the employees in the city travel less than of km to work. Find the value of d. Correct your answer to 2 decimal places. (4 marks]