Please help?

1. How much interest will you earn if you save $1000 for six years at a rate of 4%?

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2. You borrowed $3500 from the bank to buy a used car. The interest rate is 5.5% and the loan is to be paid back in 4 years. What is the extra amount in interest that you must pay to the bank?

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3. If my investment of $3000 earned $220.15, how long did I invest if the rate of interest was 1.45% annually ?

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4. If in 4 years, I earned $250.25, how much did I invest if the rate of interest was 2.05% annually?

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5. My $8500.00 loan's rate of interest was 4.25% yearly, and I owed an extra $375.00. How long was my loan?

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