Evaluating Expressions

Write an algebraic expression for "12 more than number". 

• x + 12
• 12x
• x - 12

Write an algebraic expression for "8 less than a number".          

• 8x
• x - 8
• 8 - x

Write an algebraic expression for "the difference of eighteen and a number".

• 18n

• n-18

• 18-n

• 18/n

Write an algebraic expression for "the quotient of a number and 4".

• n / 4

• n - 4

• n + 4

• 4n

Write an algebraic expression for "The product of seven and j".

• 7j

• j + 3

• j - 3

• j/3

Write an algebraic expression for "a number subtracted from eight".

• n - 8

• 8 - n

• 8n

• n/8

Evaluate 12 ÷ a · b

if a = 3 and b = 2

• 6

• 2

• 8

Six less than twice a number.

• 6 – 2x

• 6 – x²

• 2x – 6

• x² – 6

Three times the sum of a number and 5.

• 3(x + 5)

• 3x + 5

• 3(x – 5)

• 3x – 5

Evaluate m² - ( - k) + 4

^{when m = - 3 and k = - 7}

• -6

• -9

• 6

• 9