OpenStax, Algebra and Trigonometry 2e §11.6 Solving Systems with Gaussian Elimination · Example 13 · Linear Algebra · Matrices
Applying 2 × 2 Matrices to Finance
Carolyn invests a total of $12,000 in two municipal bonds, one paying 10.5% interest and the other paying 12% interest. The annual interest earned on the two investments last year was $1,335. How much was invested at each rate?
OpenStax, Algebra and Trigonometry 2e · §11.6 Solving Systems with Gaussian Elimination · Example 13
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