Linear Inequalities Worksheets Page 47
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50Preparing for Standardized Tests
Preparing for Standardized Tests
Write and Solve an Inequality
Many multiple-choice items will require writing and solving inequalities.
Follow the steps below to help you successfully solve these types of problems.
Strategies for Writing and Solving Inequalities
Step 1
Read the problem statement carefully.
Ask yourself:
• What am I being asked to solve?
• What information is given in the problem?
• What are the unknowns for which I need to solve?
Step 2
Translate the problem statement into an inequality.
• Assign variables to the unknown(s).
• Write the word sentence as a mathematical number sentence looking for words
such as greater than, less than, no more than, up to, or at least to indicate the type
of inequality as well as where to place the inequality sign.
Step 3
Solve the inequality.
• Solve for the unknowns in the inequality.
• Remember that multiplying or dividing each side by a negative number reverses
the direction of the inequality.
• Check your answer to make sure it makes sense.
SPI 3102.3.5
Test Practice Example
Read the problem. Identify what you need to know. Then use the information
in the problem to solve. Show your work.
Pedro has earned scores of 89, 74, 79, 85, and 88 on his tests this semester. He
needs a test average of at least 85 in order to earn an A for the semester. There
will be one more test given this semester.
A Write an inequality to model the situation.
B What score must he have on his fi nal test to earn an A for the semester?
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Chapter 5
Preparing for Standardized Tests
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