Illustration of Understands, analyzes, solves, and applies equations and inequalities in the ICLE's Rigor and Relevance Framework
Quadrant C

Solve this equation:
13 = 0.10(x-200) + 5
Use different methods and different representations (including tables, graphs, analytical methods, symbolic reasoning, using technology, etc.). Analyze and evaluate each method and representation, including advantages and disadvantages of different methods and representations.

 Quadrant D

Research some text-messaging plans available in your area. Find a mathematical model that represents each plan. Given your text-messaging habits and the mathematical models, evaluate these plans, and choose the one that is best for you. Explain your choice and why you think it's the best plan for you.
Quadrant A

Solve this equation:
13 = 0.10(x-200) + 5
Describe the process you used to solve the equation. Check your solution and explain what the solution means in terms of the equation.

 Quadrant B

Consider this text messaging plan for your cell phone: You pay $5 per month for 200 text messages, then you are charged $0.10 for each additional message either sent or received. Find an equation that models this text-messaging plan. Use your equation to determine how many text messages you can send or receive in a month if you are willing to spend $13 that month on text messages.