Rebecca is playing a video game that involves planting and cutting down trees. She moves up an energy level for each tree she plants, and she moves down a level for each tree she cuts. If Rebecca reaches energy level 10, she will earn bonus points. Rebecca is currently at energy level 4. The results of her next 3 turns are:

Turn 1: 6 trees cut

Turn 2: 8 trees planted

Turn 3: 1 tree cut

Answer the questions to find out whether Rebecca earned bonus points in the next 3 turns. Use the number line to help you add.

1. Using only addition, write an expression that represents Rebecca's score after these three turns. (Remember that she starts at an energy level of 4.).

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2. What is Rebecca's energy level after Turn 1?

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3. What is Rebecca's energy level after Turn 2?

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4. What is Rebecca's energy level after Turn 3? Will she earn bonus points after Turn 3? Explain why or why not.

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