Solving Word Problems with Inequalities

The video tutorial teaches how to solve word problems using inequalities. It begins with a cell phone plan comparison, explaining how to set up and solve inequalities. The lesson highlights common mistakes, such as miswriting inequalities. It then demonstrates solving inequalities step-by-step, using additive and multiplicative inverses. The tutorial also covers a field trip cost analysis, comparing costs for a zoo and museum trip using inequalities. The lesson concludes by reinforcing the logical application of inequalities in real-world scenarios.

What is the monthly charge for Plan X before any text messages are sent?

• $30

• $50

• $20

• $40

Which plan offers unlimited text messages for a fixed monthly fee?

• Plan Y

• Both Plan X and Plan Y

• Neither Plan X nor Plan Y

• Plan X

In the field trip example, what is the flat fee for the museum?

• $200

• $150

• $250

• $100

How many students need to attend the trip for the museum to be a better deal than the zoo?

• 30

• 25

• 35

• 20

What is the key takeaway from the lesson on solving word problems using inequalities?

• Always use the greater than sign

• Check your solution by substituting back into the original inequality

• Inequalities are only used for financial problems

• Word problems do not require inequalities