#1

1. 1011= 2^3 + 2^1 + 2^0 = 8 + 2+ 1 = 11

2. 101010= 2^5 + 2^3 + 2^1 = 32+8+2 = 42

3. 11111= 2^4 + 2^3 + 2^2 + 2^1 + 2^0 = 16 + 8 + 4 + 2 + 1 = 31

4. 10010 = 2^4 + 2^1 = 18

#2 

1. 31 = 2^4 + 2^3 + 2^2 + 2^1 + 2^0 = 11111

2. 51 = 2^5 + 2^4 + 2^1 + 2^0 = 110011

3. 7 = 2^2 + 2^1 + 2^0 = 111

4. 103 = 2^6 + 2^5 + 2^2 + 2^1 +2^0 = 1100111

#3

1. 1KB/s = .125 KB/s -----> 56 KB/s = 7 KB/s -----> 100,000 KB/7KB/s = 3.97 Hours

2. 1MB/s = .125 MB/s -----> 5 MB/s = .625 MB/s -----> 100 MB/.625MB/s = 2 Minutes 40 seconds

3. 1MB/s = .125 MB/s -----> 10 MB/s = 1.25 MB/s -----> 100 MB/1.25MB/s = 1 minute 20 Seconds

#4.

1. 3 MB/s = .325 MB/s -----> ?/.375 MB/s x 3600 Seconds = 1350 MB / 60 MB = 22.5 Mp3s