Answer:
A
Step-by-step explanation:
Just as squared has an exponent of 2, cubed has an exponent of 3.
Therefore, k is seen as [tex]K^{3}[/tex] (or K^3 if that is too small to see)
Another keyword is "plus" as this indicates addition which has a symbol of +
So in this case, your answer would be A) K^3 + 7
