Number three can't have two outputs so remove it from b
D. both climbers rested on the wall for 2 minutes
The polygon has 18 sides. To find an exterior angle you have to divide 360 by the number of sides in the polygon to find the measure of an exterior angle. Since each exterior angle equals 20 degrees, you would divide 360 by 20 which would equal 18 sides.
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Answer:

Step-by-step explanation:
Gradient



Equation of a line

- Sub one set of points into equation
