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Since the beginning of school, Steven has been saving money to buy a new MP3 player. His bank balance is represented by the graph below.  

  1. According to the graph, about how much money had Steven saved after weeks of school?

    Since the -axis represents the number of weeks of school, locate and move vertically along the line until you find the graphed point. What is the -coordinate for this point?

    He's saved about

  2. About how much money did Steven probably have after weeks of school? How can you tell?

    Imagine a line that best represents the trend of the graph.

    What is the -coordinate of the line when is ?


  3. If he keeps saving at the same rate, how much will he have saved by Week 7? Explain how you know.

    Follow the steps in part (b).

First quadrant graph: X, axis labeled, Weeks of School, Y, axis labeled, Bank Balance,  with the following points: (0.5 comma 30), (1, comma 35), (1.5, comma 41), (2, comma 40), (2.5, comma 35,) and (5, comma 60).