In four years you plan to take a family vacation to Florida at an estimated cost of $4,000. If you can earn an average of 3.75% per year, how much must you invest today in order to have the funds needed for the planned vacation? The Williams Valley School District had 4,892 students enrolled six years ago. Today, the district enrollment is 3,704 students. What has been the annual rate of change of student enrollment in the Williams Valley School District over this time period? Franklin Corporation s new Chief Marketing Officer has pledged to increase sales from its current level of $7,000,000 at a rate of 5% per year until the firm hits sales of $18,000,000 per year. How long will it take to hit the target goal at this rate of increase