Algebra-1

To identify the cubic monomial with a leading coefficient of 4, we need to look for the monomial that has a degree of 3 (cubic) and a leading coefficient of 4. Let's analyze each option:

A. 4x + 3x² + 4:
This expression has three terms, with the highest degree term being 3x². Therefore, it is not a monomial. Additionally, the leading coefficient is not 4. Therefore, option A is not a cubic monomial with a leading coefficient of 4.

B. 3x³ + 4x²:
This expression has two terms, with the highest degree term being 3x³. However, the leading coefficient is 3, not 4. Therefore, option B is not a cubic monomial with a leading coefficient of 4.

C. 3x² + 4:
This expressio...