Solve the System as Matrix Equations Using Inverses

Multiple Choice

Solve the system as matrix equations using inverses.
-A company produces three models of MP3 players, models A, B, and C. Each model A machine requires 3.2 hours of electronics work, 2.8 hours of assembly time, and 4.4 hours of quality assurance time. Each model B
Machine requires 5.4 hours of electronics work, 2.4 hours of assembly time, and 3.4 hours of quality assurance
Time. Each model C machine requires 2.2 hours of electronics work, 5.8 hours of assembly time, and 4.8 hours of
Quality assurance time. There are 303 hours available each week for electronics, 393 hours for assembly, and
416 hours for quality assurance. How many of each model should be produced each week if all available time
Must be used?

A) Model A: 31
B) Model A: 28
C) Model A: 30
D) Model A: 30 Model B: 20 Model B: 22 Model B: 15 Model B: 20
Model C: 44 Model C: 45 Model C: 50 Model C: 45