9.

A. Matrix A gives the number of cutting boards
that Monique and Shondra contracted to make
in August. Matrix B gives the number of wood
strips needed to make each style.

B. Walnut costs $1.50 per strip, maple costs $.85
per strip, and cherry costs $1.10 per strip. Write
matrix C to represent these costs. Use matrices
A, B, and C and matrix multiplication to fi nd the
total cost of Monique’s wood and of Shondra’s
wood. Show the matrix product you used. Th en
describe your solution method.

Question

9. 

A. Matrix A gives the number of cutting boards 
that Monique and Shondra contracted to make 
in August. Matrix B gives the number of wood 
strips needed to make each style. 

B. Walnut costs $1.50 per strip, maple costs $.85 
per strip, and cherry costs $1.10 per strip. Write 
matrix C to represent these costs. Use matrices 
A, B, and C and matrix multiplication to fi nd the 
total cost of Monique’s wood and of Shondra’s 
wood. Show the matrix product you used. Th en 
describe your solution method.

firejay5 · Answer

@mathstudent55 Go to this website to page 8 and the matrices are on problem #9 on the Check Your Understanding: http://www.dentonisd.org/cms/lib/TX21000245/Centricity/Domain/669/1.6.pdf