Variables and Expressions

Which of the following expressions represents "the sum of n and the sum of 8 and 6"? a. (n + 6)8 b. n + (8 + 6) c. n(8 + 6)

b. n + (8 + 6)

Which of the following expressions represents "twelve diminished by six times a number"? a. 2 - 6n b. 6n - 12 c. 12n - 6

c. 12n - 6

Which of the following expressions represents "three times the difference between t and y"? a. y - 3t b. 3t - y c. 3(t - y)

c. 3(t - y)

Which expression does not represent "the sum of n and 6"? a. 6 + n b. n + 6 c. 6n

c. 6n

n - 5

five subtracted from n

If x is 5, then 6x = ___. a. 30 b. 30x c. 5x

a. 30

The coefficient of 6x is ___. a. 1 b. 6 c. x

b. 6

Which of the following expressions represents "the difference of 8 and n"? a. n - 8 b. 8 - n c. -8n

b. 8 - n

Which of the following expressions does not represent "four more than one-third x"? a. 1/3x + 4 b. x/3 + 4 c. 1/4x + 3

c. 1/4x + 3

The coefficient of 9(14)P is ___. a. 9 b. 14 c. 126

c. 126

x + 8

eight added to x

8 - x

eight minus x

x - 8

eight subtracted from x

5 - n

five minus n

x + (8 - 2)

the difference of eight and two added to x

x - (8 + 2)

the sum of eight and two subtracted from x

n + 5

the sum of n and five

x + x

the sum of x and itself

x + (5 + 7)

x added to the sum of five and seven

The coefficient of 2(3)(6)Q is ___. a. 36 b. 18 c. 12

a. 36

Which of the following expressions represents "the quotient of nine times a number and seven"? a. 9n ÷ 7 b. 9n - 7 c. 9(n + 7)

a. 9n ÷ 7

The coefficient of 8 · 2N is ___. a. 8 b. 2 c. 16

c. 16