Answer:
Four(4)
Step-by-step explanation:
The given algebraic expression is:
[tex]3x^3y+5x^2+y+9[/tex]
The variables in this expression are [tex]x[/tex] and/or [tex]y[/tex].
The variable terms in this expression are terms containing [tex]x[/tex] and [tex]y[/tex].
These terms are:
[tex]3x^3y[/tex]
[tex]5x^2[/tex]
and
[tex]y[/tex]
Therefore there are 4 variable terms.