i need help with this CSC-211 class this is a programming class and the Programming language is C++

Review Questions and Exercises 241 21. Internet Service Provider Part 1 An International Internet phone company has three different subscription packages for its customers: Package A: For $9.95 per month 5 hours of call time are provided. Additional usage costs $0.08 per minute. Package B: For $14.95 per month 10 hours of call time are provided. Additional usage costs $0.06 per minute. Package C: For $19.95 per month unlimited call time is provided. Write a program that calculates a customer's monthly bill. It should input customer name, which package the customer has purchased, and how many hours were used. It should then create a bill that includes the input information and the total amount due. Wherever possible use named constants instead of numbers. Input Validation: Be sure the user only selects package A, B, or C. 22. Internet Service Provider Part 2 Modify the program in problem 21 so it also displays how much money Package A customers would save if they purchased packages B or C, and how much money package B customers would save if they purchased package C. If there would be no savings, no message should be printed