Doug C. answered 01/08/19
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p(2) = -48 means if you substitute 2 for x in the function definition you get an answer of -48.
Let K represent the ? in the problem statement.
So we have:
-48 = K (2)3
-48 = 8K
K = -6.
Check it out: if p(x) = -6x3, does p(2) = -48?