Warm-up 5-11

Which inequality matches the graph?

• A

• B

• C

• D

The variable, k, is being divided by 11. How should you isolate the variable?

 $16=\frac{k}{11}$  

• Divide both sides by 11

• Multiply both sides by 11.

• Add 11 to both sides.

• Subtract 11 to both sides.

Which choice models this situation? Marcus needs to sell 25 tickets to a fundraiser by Friday. So far, he has sold 9 tickets. How many tickets does he still need to sell?

• t - 9 = 25

• t + 9 = 25

• 9t = 25

• t/9 = 25

Mathematically, what is the 10 doing to the x?  
 $10x=90$  

• Adding 10

• Subtracting 10

• Multiplying 10

• Dividing 10

Describe the graph for the solution for the following inequality:
a + 13 ≥ 20

• Closed circle; arrow pointing left
• Open circle; arrow pointing left
• Closed circle; arrow pointing right
• Open circle; arrow pointing left