3. Calculating Interest Rates [LO3) Assume the total cost of a college education will be $345,000 when your child enters college in 18 years. You presently have $73,000 to invest. What annual rate of interest must you earn on your investment to cover the cost of your child's college education? 4. Calculating the Number of Periods |L04) A: 6.1 percent interest, how long does it take to double your money? To quadruple it? 5. Calculating Interest Rates (103) According to the Census Bureas, in October 2016, the average house price in the United States was $154,900. In October 2000, the average price was $215.100. What was the annual increase in the price of the average house sold? 6. Calculating Interest Rates and Future Values (LO1, 3 in 1895, the first US Open Golf Championship was held. The winner's prize money was $150. In 2016, the winner's check was $1.800.000. What was the percentage Increase per year in the winner's check over this period? If the winner's prize increases at the same rate what will it be in 20407