we have
Inequality A
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the solution A is the interval------------> (-3,∞)
Inequality B
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the solution B is the interval------------> (-∞,6)
we know that
The solution Inequality A or Inequality B is equal to
(solution Inequality A+solution Inequality B)
(-3,∞)+(-∞,6)=(-∞,∞) -------> all real numbers
therefore
the answer is the option
D. number line with shading everywhere