An algebraic expressions which is equivalent to the verbal statement “Three times the sum of x and y” is

(a)

3(x + y)

(b)

3 + x + y

(c)

3x + y

(d)

3 + xy

The numerical co-efficient of −7mn is

(a)

7

(b)

-7

(c)

p

(d)

-p

Choose the pair of like terms

(a)

7p, 7x

(b)

7r, 7x

(c)

−4x, 4

(d)

−4x, 7x

The value of 7a − 4b when a = 3, b = 2 is

(a)

21

(b)

13

(c)

8

(d)

32

The addition of 3mn, −5mn, 8mn and −4mn is

(a)

mn

(b)

-mn

(c)

2mn

(d)

3mn