Emek and Tara piloted a rescue craft toward a group of disabled satellites. Their navigation system measured each satellite's coordinate level relative to a zero reference plane. The satellites were located at -13, 8, -6, 14, and 5. Because fuel was limited, they first needed to rescue the satellite closest to zero. Tara compared the distances of the coordinates from zero and found that 5 was closest. After reaching that satellite, they planned to continue in one direction rather than repeatedly crossing the zero plane. They ordered the remaining coordinates from greatest to least: 14, 8, -6, -13. Emek noticed that moving directly from 5 to 14 would skip the satellite at 8, so they adjusted the route to 5, 8, 14, -6, -13. They completed the rescues in that order, using the signed coordinates to avoid unnecessary changes of direction. Soon every satellite was transmitting again, and the rescue craft returned with fuel to spare.

Challenges

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Challenge 1 of 5

Challenges

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Challenge 1 of 4
Hint
Compare the absolute values of the coordinates.
Before choosing the first rescue target, Emek and Tara compare the satellites at -13, 8, -6, 14, and 5 by their distance from zero. Which satellite is second closest to zero?
8-13-614
Correct. The distances from zero begin with 5 and 6, so -6 is second closest.
Use each coordinate's distance from zero, not whether the coordinate is positive or negative.
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Hint
Find the distance from 5 to 8 and the distance from 8 to 14, then add them.
The rescue route begins 5, 8, 14. How many coordinate levels does the craft travel from 5 to 8 and then from 8 to 14 altogether?
Correct. The craft travels 9 coordinate levels altogether.
Find both positive distances separately before adding them.
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Hint
Think about the order of -6 and -13 on a number line as you move from greater values to smaller values.
After rescuing the satellite at 14, the remaining satellites are at -6 and -13. Which statement best explains why visiting -6 before -13 is consistent with continuing downward through the coordinate levels?
-13 is greater than -6, so -13 should come first.-6 is greater than -13, so moving downward from 14 reaches -6 before -13.-6 and -13 are the same distance from zero.-13 is closer to zero than -6, so -6 should come first.
Correct. Since -6 > -13, a downward route reaches -6 before -13.
Compare the two negative numbers on a number line and consider which one is greater.
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Uydu Kurtarma Rotası
TR
ARC_G07_NUM_02_STORY_02
Uydu Kurtarma Rotası
The Satellite Rescue Route
EN
ARC_G07_NUM_02_STORY_02
The Satellite Rescue Route