**Unformatted text preview: **z =-20 3 x + 12 y-6 z = 9-5 x + 4 y = 29 (2) ( x,y,z ) = (-5 , 1 ,-2) 4) A bag of dog food costs $20.00. (A tube of toothpaste costs $6.00, and a jar of vitamins costs $9.00) 1...

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- Fall '10
- Beaulieu
- Math, Probability, Following, Food Costs, $20.00, $9.00, $6.00, $8.50