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# Unit 3: One-variable equations, inequalities, and their applications

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## About this unit

This unit is about writing and solving one-variable equations and inequalities, and applying these concepts to real-world problems. We’ll also explore financial concepts including simple and compound interest, and factors that go into taking out a loan.

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### Practice

- Using inequalities to solve problemsGet 3 of 4 questions to level up!

### Learn

### Practice

- Write equations to represent problemsGet 3 of 4 questions to level up!
- Write inequalities to represent problemsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Equations with variables on both sidesGet 3 of 4 questions to level up!
- Equations with variables on both sides: decimals & fractionsGet 3 of 4 questions to level up!

### Practice

- Equations with parenthesesGet 3 of 4 questions to level up!
- Equations with parentheses: decimals & fractionsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Practice

- Sums of consecutive integersGet 3 of 4 questions to level up!

### Learn

### Practice

- Simple and compound interestGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

Up next for you:

Level up on all the skills in this unit and collect up to 1,000 Mastery points!#### Unit test

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