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Martha opened a savings account and deposited 300.00 as principal. The account earns 2% interest, compounded quarterly. How much interest will she earn after 3 years?An amount of 31,000 is borrowed for 14 years at 4.25% interest, compounded annually. If the loan is paid in full at the end of that period, how much must be paid back?Serenity invested 2,400 in an account paying an interest rate of 3.4% compounded continuously. Assuming no deposits or withdrawals are made, how long would it take, to the nearest tenth of a year, for the value of the account to reach 2,930?The sum of three consecutive even integers is 168. Find the integers.Devaughn's age is three times Sydney's age. The sum of their ages is 100. What is Sydney's age?