Correct Answer: B
Explanation:
To find the coefficient on the x term, first define what the coefficient of an expression represents.
In a general example,
axn
a represents the coefficient of the x term and n represents the degree or order of the expression.
For the particular expression in this question,
4y2+3x
the y term is 4y2.
Therefore the a value or coefficient is,
4y2→a=4