Option C (in the figure) is correct.
Step-by-step explanation:
We need to find (f.g)(x)
Given that 
Now finding (f.g)(x)


So, 
Option C (in the figure) is correct.
Learn more about Composite Functions at:
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Keywords: Composite function
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Answer:

Step-by-step explanation:
Cross multiply, isolate the variable, and divide by the coefficient to solve.

Plug back in to check.

The answer is B, or 30. 1/5 x 1/2 x 1/3 = 1/30, which means one out of 30 total options will be chosen