Question

SOS! Algebra 2! Graphing involved!
Emma wants to compare some cell phone plans by graphing their cost per text message. Mobilama charges a flat rate of $30 for unlimited texts. Celly-On-The-Go has no set-up charge, but it does charge $0.10 per text. Ringit Wireless only charges $0.05 per text, but it has an account charge of $15.

Explain to Emma how she can graph these cell phone plans and describe what key features of the graphs she should consider when making a decision.

Answer 1

@Cici0215

Answer 2

Refer to the Mathematica 9 Home Edition plot and comments attached.

Answer 3

Oh, thank you, Robtobey! :)

Answer 4

You are welcome. Have a good day.

Answer 5

You too!