1. A presentation for: Verizon store employees Topic: How to help a customer choose a cell phone plan and a text message plan By Verizon Store Managers: Insert Name 1 and Insert Name 2

2. Verizon’s Cell Phone Plans Verizon offers two cell phone plans: i.450 minutes for $40 per month, plus $0.45 for each minute over 450 minutes. 450 Minute Equation: c = ii.900 minutes for $60 per month, plus $0.65 for each minute over 900 minutes. 900 Minute Equation: c =

3. Verizon’s Text Message Plans Verizon offers two text message plans: i.250 text message for $5 per month, plus $0.10 for each text message over 250 texts. 250 text equation: c = ii.500 text message for $10 per month, plus $0.15 for each text message over 500 texts. 500 text equation: c =

4. There are three different methods you can use help a customer choose a plan: Method 1: Create a table for each plan. Method 2: Interpret a graph. Method 3: Substitution. (THIS IS OUR NEXT UNIT)

5. Method 1 for choosing a plan: Create a table of minutes and cost for each calling plan. m (minutes) c =c (cost) 900$ 1100 1300 1500 1700 1900 2100 m (minutes) c =c (cost) 900$ 1100 1300 1500 1700 1900 2100 450 minute plan900 minute plan

6. Choosing a cell phone calling plan from a table 1.If a customer is going to talk 1,100 minutes, he should choose the ________ plan because ________. 2.If a customer talks over ________ minutes, he should choose the ________ plan because _______. 3.At some point between ________ minutes and _______ minutes, it doesn’t matter which plan he chooses because ________. 4.The number of minutes where it doesn’t matter which plan the customer chooses and the price the customer pays to talk that many minutes together are called the __________ to the system of equations. 5.You can see the solution to a system of equations in a table by looking for ____________. However, we cannot see a solution on this table because ___________.

7. Method 1 for choosing a text message plan: Create a table of text messages and cost for each texting plan. t (texts)c =c (cost) 500 600 700 800 900 1000 1100 t (texts)c =c (cost) 500 600 700 800 900 1000 1100 250 text plan 500 minute plan

8. Choosing a text message plan from a table 1.The solution to the two text message plans is: 2.Before the solution to the two text message plans, the _________ plan is cheaper. However, after the solution to the two text message plans, the ____________ plan is cheaper. 3.Finding the solution to the two text message plans is useful because _____________.

9. Method 2 for choosing a cell phone plan: Create one graph showing the cost of both calling plans.

10. 1.You can see the solution to a system of equations on a graph by looking for ___________. 2.For these two calling plans, the solution is __________. 3.Finding the solution to the two calling plans helps us tell customers which plan to select because ________. Choosing a cell phone calling plan from a graph

11. Method 2 for choosing a text message plan: Create one graph showing the cost of both text message plans.

12. 1.The intersection point of the two text message plans is (______, ________). 2.Before the intersection point, the _________ text message plan is cheaper, after the intersection point the ________ text message plan is cheaper, and at the intersection point both plans ________________. Choosing a text message plan from a graph

13. In summary: (1)A system of equations is _________. (2)A solution to a system of equations is _________. (3)We can find the solution to a system of equations using two tables by __________. (4)We can find the solution to a system of equations on a graph by __________.