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The length of CD¯¯¯¯¯¯¯¯ is 7 - (-9) = 16 units.
Let the length of CE¯¯¯¯¯¯¯¯ be x units. Since the ratio of CE to CD is 3/4, we have:
(x)/(16) = 3/4
To solve for x, we can cross multiply:
4(x) = 3(16)
4x = 48
x = 48/4
x = 12
Therefore, point E is 12 units from point C.
The answer is D. 12.