1. Which of the following expression is not a polynomial?
A. 3x - 1/2 B. 215 5/y C. v23x - y2 D. 2x - 3y/5

2. Which pair of algebraic terms is not similar?
A. 2mn and 3nm
B. 7x2y and x2y
C. 3xy and 3x2y2
D. 4m3n2 and 11n2m3

3. In the expression 3x - 2. Which of the following is a variable?
A. x B. -2 C. 2 D. 3

Nonsense answer will get reported automatically, thank you.