4x – 8 = 12 4x - 8 + 8 = 12 + 8 4x = 20 20 h
1 answer:
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ANSWER
d. The set of all real numbers
EXPLANATION
The basic cosine function ,
is continuous everywhere.
The function is defined for all real values of x.
The domain is the set all values of x that will make the function defined.
The domain is all real numbers.
The correct choice is D.
