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If 30,000 is invested at 5% annual interest compounded monthly, how long would it take for the account balance to reach 90,000? Round your answer to the nearest tenth.the population of a city has increased by 24% since it was last measured. If the current population is 27,900, what was the previous population?A triangular pane of glass has a height of 30 inches and an diện tích of 270 square inches. What is the length of the base of the pane?The radius of a circle is 18 in. Find its chu vi in terms of pipi.Carlos invested some money 7 years ago in a savings account that earned a simple interest rate of 3.125%. He now has 40,218.75. How much money did he start with?