Question

I need the answers to #1, #2, and #3
ty!

Answer 1

1. It represents the answer 38, using reference to the key.
2. 4 times. Those 4 times are 62, 75, 77, 79
3.

3 | 6 8 8
4 | 1 1 2 3 4
5 | 0
6 | 2
7 | 5 7 9
8 | 9

Hope this helps.