Answer:
By power of a point, AC⋅CB=DC⋅CE. That is, 12⋅12=6⋅(2R–6).
Then, R=15.
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The answer is option 4.
Step-by-step explanation:
Option 1, the slope is :
Option 2, the slope represents miles per minutes.
Option 3, the y-intercept is (0,26).
one