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21. If the inflation rate for the next 10 years is 3.5% per year, what hourly rate of pay in 10 years will be equivalent to $15/hour today? 23. Mr. and Mrs. Rasuli would like to retire in 15 years at an annual income level that would be equivalent to $35,000 today. What is their retirement income goal if, in the meantime, the annual rate of inflation is: a. 2%? b. 3%? c. 5%? *Please show work*