Miss McClure is thinking about getting her masters degree in education. She estimates that she will spend about 6,000 a year for three years to get her degree. Her plans are to take evening classes so she can keep her current teaching job. However, when she finishes ger degree she will get a 4,000 a year raise. How long (in years) will it take her to recover ger investment? (ROUND TO 1 DECIMAL PLACE)