Answer:
0.5
Step-by-step explanation:

Hope this helped :)
This problem is asking us to find 50% of 58.
Answer is provided in the image attached.
29 Votes
4
4 - 3 = 1
1 - 3 = -2
-2 - 3 = -5
-5 - 3 = -8
It's the arithmetic sequence.


substitute

Answer: 
You can line up 8 cards 64 different ways.
8 * 8 = 64
The first is proportional the second is proportional and the third is not proportional