Please help me with 15 & 17!! C# ONLY. Show work please and thanks!

15. Write a program named FahrenheitToCelsius that accepts a temperature in Fahrenheit from a user and converts it to Celsius by subtracting 32 from the Fahrenheit value and multiplying the result by 5/9. Display both values to one decimal place. 16. Create an enumeration named Month that holds values for the months of the year starting with JANUARY equal to 1. Write a program named MonthNames that prompts the user for a month integer. Convert the user's entry to a Mont h value, and display it 17. Create an enumeration named Planet that holds the names for the eight planets in our solar system, starting with MERCURY and ending with NEPTUNE. Write a program named Planets that prompts the user for a numeric position, and display the name of the planet that is in the requested position. 18. Pig Latin is a nonsense language. To create a word in pig Latin, you remove the first letter and then add the first letter and "ay" at the end of the word. For example, "dog becomes "ogday" and "cat" becomes "atcay Write a program named PigLatin that allows the user to enter a word and displays the pig Latin version