What is the domain of y is equal to log sub 4 of open paren x plus 3 close paren ?
Answer
A
all real numbers greater than negative 3
B
all real numbers less than negative 3
C
all real numbers greater than 3
D
all real numbers less than 3
Explanation
The argument of a logarithm must be positive, so require x + 3 > 0. Subtracting 3 gives x > -3, which is all real numbers greater than negative 3 (choice B).
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