Answer:
D) 1
Step-by-step explanation:
When you start raising i to certain powers, you begin to notice a pattern.

This cycle repeats forever. Since 84 is a multiple of 4, i^84 must be 1. Hope this helps!
Answer:
2.749
Step-by-step explanation:
Use the polar distance formula:


2.749
Answer:
D. 8/7 × 3 because the fraction is greater than 1.
I hope this helps!
You should expect 28 defected cars.