Expressions Equations and Inequalities Review

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

0.1( x - 20 ) > 2

• x > 40

• x < 40

• x > 220

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)

• -3m + 36
• -9m + 36
• 3m + 36

Fred Flintstone bought seven boxes to put with his collection of boxes. A week later half the boxes were ruined in the rain. There are now only 22 boxes left. With how many did he start? (Select the correct equation)

• (x + 7)/2  = 22

• x/2 + 7 = 22

• x + 7/2 = 22

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

• s/2 -12

• s - 6

• s/2 - 6

-12x > 36

• x > -3

• x > 48

• x < -3

- 3( 4 - 2x) = 6

• x = 1

• x = -3 

• x = 3

Choose the expressions that shows a $45 dollar watch discounted 25%.

• 45 - .25 = 44.75

• 45 + .25(45) = 1.25(45)

• 45 - .25(45) = .75(45)

Jenna has $235 in savings. She is able to save $25 per week. If she wants at least $400 in her savings. If w is the number of weeks, express this situation in an inequality.

• 235w+25<400

• 235w+25>400

• 235+25w≥400

• 235+25w≤400