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If x100 + 2x99 + k is divisible by (x + 1), then the value of k is:

Option :
A. 1
B. -3
C. 2
D. -2

One of the factors of 3x3 + x2 - 12x - 4 is :

Option :
A. 3x - 2
B. 3x + 2
C. 3x - 1
D. 3x + 1

The solution of the system of simultaneous linear equations
4x - 3y = 7 and 7x + 5y = 2 is :

Option :
A. x = 1, y = 1
B. x = -1, y = 1
C. x = -1, y = -1
D. x = 1, y = -1

If 2x + 3y = 12 and 3x - 2y = 5, then x and y must have the values :

Option :
A. 2 and 3
B. 2 and -3
C. 3 and -2
D. 3 and 2

The set of homogeneous simultaneous equations
4x + 2y = 0 and
6x + 3y = 0 has :

Option :
A. x = 0, y = 0 as solutions
B. x = 0, y = 0 and x = 1, y = -2 as solutions
C. x = 0, y = 0 ; x = -1, y = 2 and x = 1, y = -2 as solutions
D. an infinite number of solutions.