This task is from Tools 4 NC Teachers. Students record expressions based on a real life context. This is remixable. 

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John is playing a video game. At a certain point in the game, he has 32,700 points. Then, the following events happen, in order:

• He earns 1760 additional points.

• He loses 4890 points.

• The game ends, and his score doubles.

Write an expression for the number of points Eric has at the end of the game. Do not evaluate the expression. The expression should keep track of what happens in each step listed above.

John’s sister Erica plays the same game. When she is finished playing, her score is given by the expression:

                                   4(31,500 + 2560) – 8760.

Describe a sequence of events that might have led to Erica earning this score.