Equations and Inequalities

Solve for x. 
x - 3.2 = 9.1

• 6.4x = 12.3
• x= 5.9
• x= 12.3
• x= 6.1

Solve for x. 
x + 5.9 = 15.7

• x = 9.8
• x = 21.6
• x = 10.2
• x = 8.9

Solve for x. 
6x = 42

• x = 8
• x = 7
• x = 6
• x = 9

Solve for x. 
2x = 5.5

• x = 2.75
• x = 275
• x = 27.5

Solve for x. 
^x/₃ = 12

• x = 12
• x = 4
• 3x = 36
• x = 36

Will the following inequality have an open dot or closed dot on the graph?    x ≥ -2

• Open dot, because there is a line under the inequality symbol
• closed dot, because we want to include -2 in our solution set
• closed dot, because there is no line under the inequality symbol

The following inequality will be shaded which direction when graphed on a number line:  
x ≤ -2.75

• Towards zero and the positive numbers
• Towards more negative numbers

Pick the set of solutions that makes the inequality true.   x ≥ -2

• x = -3, -4, -5, -6
• x = 3, 4, -5, -6
• x= 1, 2, -2, 3
• x= 1, 2, -2, -3

Solve the inequality for x. 
4x > 48

• x = 12
• x > 12
• 4x > 12
• x > 3

Pick the answer choice that best describes the graph of the following inequality x ≥ -5.1 

• closed dot on -5.1, shaded towards the right 
• open dot on -5.1, shaded towards the right
• closed dot on -5.1, shaded towards the left
• closed dot on 5.1, shaded towards the right