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Chapter 10 Patterns and Expressions
Survival on Mars

While approaching for landing on Mars, the shuttlecraft’s engine malfunctioned and astronaut Jane Canuck was forced to land a 6-h walk from the nearest outpost. Jane knew that there was a radio transmitter at the outpost that she could use to call for help. The shuttlecraft had a supply of 1-h oxygen bottles, but Jane could only carry four at a time. How can Jane reach the outpost and call for help?


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