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# Alg II 3.1-3.3 Quiz Review

## by jtentinger on Jan 11, 2013

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## Alg II 3.1-3.3 Quiz ReviewPresentation Transcript

• Quiz Review3.1-3.3Algebra II Unit 3 Linear Systems© Tentinger
• Solve by graphing
• Solve by Substitution
• Solve by Elimination
• Find all whole numbersolutions
• Solve by graphing
• • An ordinary refrigerator costs \$503 and has an estimated annual operating cost of \$92. An energy efficient model costs \$615 with an estimated annual operating cost of \$64. Write a system of equations to represent this situation.• X - # of years, y – total cost of frig• y = 92x + 503• y = 64x + 615• What is the solution to the system?• (4, 871)• What does the solution mean?• The break even point is at 4 years• Which model would you choose and why?
• Homework• Pg. 156• #1-14, 16, 18