Solving Expressions When Given Variable

0.1( x - 20 ) > 2

• x > 40

• x < 40

• x > 220

• -3m + 36
• -9m + 36
• 3m + 36

Which expression is equivalent to (s - 12) / 2

• s/2 -12

• s - 6

• s/2 - 6

Choose the first step in solving the following equation.
-3y - 12 = 14

• add 3 from both sides

• add 12 to both sides

• subtract 12 from both sides

The perimeter of an equilateral triangle is 18y - 6.  What is the length of one side of the triangle?

• 6y - 2

• 54y -18

• 3(18y -6)

Two times some number added to eight

• 2x + 4

• 2x + 8

• 10x

• x² + 8

Identify the coefficient(s) in the expression 2x + 4 - x + 3x,

• 4

• x

• 2 and 3

• 2, 4, and 3

Evaluate 3d if d = 5

• 3

• 5

• 12

• 15

Which of the following are true about an equation?

• Contains an equal sign

• May contain variables

• Has many solutions

• Shows two expressions are equal

When solving n - 14 =3, what operation would you use to find the answer

• multiplication

• addition

• subtraction

• division