Name ____________________________________________ Period ______________
ChitChat Cell Phone Plan
ChitChat cell phone company charges a monthly fee of $35 plus $0.05 per text that you send or receive. Create a table that represents the total of
you monthly cell phone bill from ChitChat. Graph your data on the graph provided.
Number of
Texts
0
50
100
150
200
250
300
350
400
450
500
Total Bill
TalkAway Cell Phone Plan
TalkAway cell phone company charges a monthly fee of $20 plus $0.10 per text that you send or receive. Create a table that represents the total of
you monthly cell phone bill from TalkAway. Graph your data on the same graph as ChitChat Cell Phone Plan.
Number of
Texts
0
50
100
150
200
250
300
350
400
450
500
Total Bill
Questions:
1. Write an equation for each phone plan:
a. ChitChat Cell Phone Plan: ___________________________
TalkAway Cell Phone Plan: ____________________________
b. Use your table and graph to determine when each plan is a better deal. Explain.
c. Solve this system using the equations you wrote in question 1.
100
90
Total Bill
80
70
60
50
40
30
20
10
50
100 150
200 250 300 350 400 450 500
Number of Texts