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The annual interest earned by $18,000 is $206 more than the interest earned by $16,000 invested at a rate 0.8% less than the one corresponding to the $18,000. What is the rate of interest for each amount?

Find three consecutive odd integers such that, the product of the first and the third minus the product of the first and the second, is 11 more than the third number.

In Pennsylvania, the state income tax is directly proportional to gross income. Suppose you were working in Pennsylvania and your state income tax deduction was $43.50 for a gross monthly income of $1500. Which of the following mathematical models gives the...