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0. Review of Algebra4h 16m
1. Equations & Inequalities3h 18m
2. Graphs of Equations1h 31m
3. Functions2h 17m
4. Polynomial Functions1h 44m
5. Rational Functions1h 23m
6. Exponential & Logarithmic Functions2h 28m
7. Systems of Equations & Matrices4h 6m
8. Conic Sections2h 23m
9. Sequences, Series, & Induction1h 19m
10. Combinatorics & Probability1h 45m

1. Equations & Inequalities

Powers of i

College Algebra1. Equations & InequalitiesPowers of i

Multiple Choice

Multiple Choice

Simplify the power of $i$ .
$i^{85}$

A

$i$

B

-1

C

$-i$

D

1

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2

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