Lessons 19-21 Lesson Review

Lessons 20 & 21 Review for QUIZ

By Paige Blevins

Multiple Choice

Solve the linear inequality.

• x > -2

• x < -2

• x < 2

• x > 2

Multiple Choice

You flip an inequality symbol when you...

• subtract

• multiply and divide only

• add a negative number

• multiply or divide by a negative number

Multiple Choice

When graphing an inequality, you use an open dot when you use which symbol?

• <, >
• ≤, ≥ 

Multiple Choice

Which graph matches the inequality
k < 3?

• A
• B
• C
• D

Multiple Choice

When graphing an inequality, you use an closed dot when you use which symbol?

• <, >
• ≤, ≥ 

Multiple Choice

Match the graph with its inequality.

• a > 11
• a < 11
• a ≥ 11
• a ≤ 11

Multiple Choice

Starting money = $350.
Interest rate = 2.5%
TIme = 3 years.
What is the simple interest? I = prt

• $7.50
• $26.25
• $87.5
• $262.50

Multiple Choice

Lona wants to a buy raincoat for her goat.  If the raincoat costs $40.00 and has a sales tax rate of 7%.  What will be the FINAL PRICE (with tax) of the raincoat?  

• $42.80

• $42.78
• $2.80
• $2.79

Multiple Choice

One week, 72 people got a speeding ticket. The next week, only 36 people got a speeding ticket. What is the percent of change in the speeding tickets?

• Increase 50%
• Decrease 50%
• Increase 1%
• Decrease 1%

Multiple Choice

You estimated that Taylor Swift is 31 years old. She is actually 35 years old. Find your percent of error. Round to the nearest tenth of a percent.

• 9.7%

• 11.4%

• 5%

• 7%