The interval of the domain in which the function f is positive is option D)(-infinity, 3)
How to find the function?
The input value is the domain which gives the output function f(x).
- if the input value is positive the function f(x) is giving negative value.
- if the input is -3 or o(infinity), the function f(x) is providing positive value.
according to the table and the option provided,
A. (-infinity, 0)
B. (0, infinity)
C. (-infinity, infinity)
D. (-infinity, 3)
option D is the answer.
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