Calculus

Match each polar equation below to the best description. Each answer should be C,F,I,L,M,O,or T.

DESCRIPTIONS
C. Cardioid, F. Rose with four petals, I. Inwardly spiraling spiral, L. Lemacon, M. Lemniscate, O. Outwardly spiraling spiral, T. Rose with three petals

1. r=10-10sin(theta) ?
2. r=10/theta r>0 ?
3. r=18sin(2theta) ?
4. r=10theta r>o ?
5. r=10+20cos(theta) ?
6. r=10cos(3theta) ?

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