Review5 - Name M AT 1033 Review 5 Systems of Equations 1-4...

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MAT 1033 Name _________________________ Review 5: Systems of Equations 1-4 A: 3x - y = 4 x + 2y = 13 B: y = x + 4 x - y = 3 C: D: 1. Identify the number of solutions for each system. A __________ B __________ C __________ D __________ 2. Solve system A by elimination. 2. _____________ 3. Solve system B by substitution. 3. _____________ 4. Solve system D by observing the graph. 4. _____________ Smith, E./PC/1707E/A 12/04
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2 5-8 Sarah needs to open a checking account and is considering two banks, $RUs and PennyWise. $RUs charges a monthly fee of $3.00 and $.20 for each check it processes. PennyWise’s monthly fee is $5.00 and $.10 for each check. 5. Based on the number of checks written each month, write an algebraic equation (model) for the monthly cost to have an account in each bank. 5. $RUs: __________________ PennyWise: _____________ 6. Use your equations to determine algebraically the number of checks for which the cost at each bank would be the same. 6. ____________ 7. Graph each equation. Monthly Costs Number of Checks 8. Last month, Sarah would have written 12 checks. Use the graph to decide at which bank she would have paid the smaller cost.
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