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Translate the problem into an equation:
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7 years ago, Tim won some money in the lottery and put it in a bank account that earns 15% interest compounded quarterly. If Tim currently has 400.00 in the bank account, how much interest has he earned?Sadie invested 13,000 in an account paying an interest rate of 2.3% compounded daily. 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 16,900?Heather puts 700.00 into an account to use for school expenses. The account earns 13% interest, compounded annually. How much will be in the account after 9 years?Find the area of a circle with a 円周 of 11piftthe sum of a number and 12 is 42