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Home > A2C > Chapter 7 > Lesson 7.3.4 > Problem 7-203


Juan, Huang, and Danusha have pencils and pens in their backpacks. Juan has pencils and pens, Huang has pencils and pens, and Danusha has pencils and pens.

  1. Represent this information in a matrix. Label rows and columns.

  2. Each pencil is worth cents, and each pen is worth cents. Represent this information in a matrix in such a way that you can multiply the first matrix by this one. Label rows and columns.

  3. Find the product matrix and interpret the , entry.

    The 2,1 entry is 1.65, and represents the total value of Huang's pens and pencils.