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OpenStax, Algebra and Trigonometry 2e §11.8 Solving Systems with Cramer's Rule · Exercise 56 · Linear Algebra · Determinants

Solving Systems with Cramer's Rule · Exercise 56

Create a system of linear equations to describe the behavior. Then, solve the system for all solutions using Cramer’s Rule.

You invest $80,000 into two accounts, $22,000 in one account, and $58,000 in the other account. At the end of one year, assuming simple interest, you have earned $2,470 in interest. The second account receives half a percent less than twice the interest on the first account. What are the interest rates for your accounts?

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OpenStax, Algebra and Trigonometry 2e · §11.8 Solving Systems with Cramer's Rule · Exercise 56

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