Answer:
(3x)³
Explanation:
In the algebraic expression, "... the cube of the product of 3 and a number":
Let x represent a number.
The given algebraic expression states that both the integer, 3, and a number, x, raised to the third power.
Hence, the algebraic expression of "... the cube of the product of 3 and a number" is: (3x)³.