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# Unit 9: Get ready for infinite sequences and series (BC only)

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## About this unit

Sequences and series—we know they repeat ... again and again. Here you'll investigate features of arithmetic and geometric sequences and series to the nth degree as you gear up for AP Calculus BC!

### Learn

### Practice

- Explicit formulas for arithmetic sequencesGet 3 of 4 questions to level up!

### Practice

- Explicit formulas for geometric sequencesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

### Practice

- Summation notation introGet 3 of 4 questions to level up!

### Learn

### Practice

- Arithmetic seriesGet 3 of 4 questions to level up!

### Learn

### Practice

- Geometric series formulaGet 3 of 4 questions to level up!
- Finite geometric series word problemsGet 3 of 4 questions to level up!
- Finite geometric seriesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

### Practice

- End behavior of rational functionsGet 3 of 4 questions to level up!

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Level up on all the skills in this unit and collect up to 800 Mastery points!