22.the difference of twice a number and 3 is
A.2x-3
B.3-2x
C.3x-2
D.2x<3
23.what is the value of 4abc when a=2,b=3 and c=2?
A.-48
B.48
C.-12
D.12
24.evaluate an algebraic expression 2xy -xyz, when x= 1, y = 2, z = -1
A.2
B.-2
C.6
D.-6
25.Evaluate an algebraic expression for given values of the variable;3x -2y + 5 when ×4 and y=2
A.-13
B.-12
C.12
D.13
26.Evaluate 5a + 3b-2, when a= -1 and y=3
A.-3
B.-4
C.3
D.4
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