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### Course: Algebra 1>Unit 2

Lesson 5: Multi-step inequalities

# Using inequalities to solve problems

We can use inequalities to solve problems in a given context. Created by Sal Khan.

## Want to join the conversation?

• How many stops can Kalya make before spending \$14.50 if 1 stop is \$1.50
• Well, when you think about it... She can stop 14 times... (or 13 im too tired to think) because everytime she stops she is loosing another \$1.50.
1- 1.50
2- 3
3- 4.5
4- 6
5- 7.5
6- 9
7- 10.5
8- 12
9- 13.5
10- 15 (which stops, cause you can't go over \$14.50 dollars.
So now that I used my brain... It would be 9 times... xD

I hope this helps! <3
• Why weren't the inequalities swapped when you divided??
• You see we only swap when we divide by a negative. Hope this helps.
• what doesn't Kayla just....take a plane.
• It's four miles away-
• How would you graph this inequality? 🤔
• You put a closed circle and you draw an arrow pointing to the left.
• Its not that I dont understand the solving and finding the solutions to the variables and inequalities. It's I cant comprehend word problems. Please make a video on word problem comprehension, strategies, tips and tricks to solve them. No matter how much I draw visually or read. It doesnt seem to work.
• the 8 kilometers has nothing to do with it right?
• Yes, it is just explanation of the problem
• My teacher said you flip the inequality sign or something whenever you move a number to another side. Is this true?
• I do believe it is only when you divide or multiply by a negative number. 😃
• At , why does Sal round down?