Daily objective: Students will solve systems of equations by graphing demonstrating an ability to make wise business decisions.
Quiz:
1) Sally charges a $5 fee for all of the tools used plus $2 per shingle put on roof. Bob has no additional fee and charges $7 per shingle put on. Solve system of equations and graph.
2) Sherri charges a $2 fee and $3 per piece of wood. Melanie charges $4 per piece of wood. Solve and graph .
3) Luke charges a $8 fee and $4 per tool needed. Josh charges a $10 fee and $2 per tool needed. Solve and graph.
Answer Key:
1) 2x+5=7x
-2x (1,7)
5=5x
5/5=1
1(7)=7

2) 3x+2=4x (2, 8)
-3x -3x
2=1x
2/1=2
3(2)+2=8

3) 4x+8=2x+10 (1, 12)
-2x
2x+8=10
-8
2x=2
2x/2=
4x1=4+8=12

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