12. Which of the following is an algebraic expression composed of two or moreterms.
A. Algebraic Expression B. Variable
C. Term
D. Polynomial
13. What is the value of 4abc when a = 2, b = 3, and c = -2?
A-48
B. 48
C. -12 D. 12
T
14. Evaluate an algebraic expression 2xy - xyz, when x= 1, y=2, z=-1.
A2
B-2
C. 6
D-6
15. What is the sum of 3x + 4x - 2, 2x - x + 2 and 3x - 4x - 5?
A 88-1
B. 8x -1 C
8x2 + x + 5
D. 8x?-X-5
16. Evaluate an algebraic expression for given values of the variable, 3x - 2y + 5 when x = 4 and y = 2
A 10
B. 11
C. 12
D. 13
17. What is the value of 50a-2b+6, when a-2.5-20?
A 40 B. 64
C.66
D. 42
18. What is the sum of the expression 2a + 3a + 7a+a?
A 13a Blla C9a
D. 22a
19. What is the sum of the expression (-2y - 4) + (2y + 4 )?
А. І
B0
C.-1
D.-2
20. Find the sum of 3x and 3y.
А. 9xy
B. 3x+3y
C9x+y
D. 3x+y​