### Home > A2C > Chapter 7 > Lesson 7.3.1 > Problem 7-156

Shola's Bakery uses sugar, eggs, and butter in all of its cakes, as well as in the frosting. Matrix

*C*shows how many eggs, cups of sugar, and ounces of butter are used in each angel food cake and in each devil's food cake. Matrix*F*shows how many eggs, cups of sugar, and ounces of butter are used in the frosting for each cake. Homework Help ✎Write the matrix

*C*+*F*, being sure to label the rows and columns, and explain what it represents.Write the matrix 3

*C*, with labels, and explain what it represents.Leora orders three angel food cakes and two devil's food cakes without frosting, as represented by the matrix

*L*at right. Use matrix multiplication to write a matrix that shows how much sugar, eggs, and butter Shola will need to fill Leora's order.

Add the numbers in the corresponding entries.

Multiply each entry in matrix *C* by 3.

Multilpy matrices *L* and *C* together to get matrix *LC*.