I'm not understanding how to work part C. Can someone please help me with it? Thank you!

15. Annual Miles Driven The average miles driven annually per licensed driver in the United States is approximately 14,090 miles. If we assume a fairly mound-shaped distribution with a standard deviation of approximately 3500 miles, find the following: value-mean Z = standard deviation 16,000-14,090 10,000-14,090 a: Z = = 0.545 -0.55 b: Z= = -1.168 8-1.17 3,500 3,500 a.z score for 16,000 miles b.z score for 10,000 miles c. Number of miles corresponding to z scores of 1.6, -0.5, and 0