Answer:
A. “A number cubed” is a power, where the base is the variable, n, and the exponent is 3.
D. The expression is written as [tex]n^{3}[/tex] + 4
Explanation:
From the given question, let the number be represented by n. So that, a number cubed can be expressed as:
[tex]n^{3}[/tex]
Increased by four implies the addition of four to the initial expression.
i.e [tex]n^{3}[/tex] + 4
Example, three cube increased by four would give.
[tex]3^{3}[/tex] + 4 = 3 x 3 x 3 + 4
= 27 + 4
= 31
Thus,
a number cubed increased by four = [tex]n^{3}[/tex] + 4
