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

7-203.

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

Represent this information in a

matrix. Label rows and columns. 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. 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.