Estimate the storage space (number of bytes) required for each of the following items:

a) A telephone book with 10,000 entries consisting of names, addresses and phone numbers. Use your phone book to estimate the average length of an entry.

b) A fax transmission of a 30-page report at high resolution (200 by 200 bits per inch). What is the raw size? What is the size if you can use a compression algorithm that reduces each page to one-twentieth the original size?

c) A 4- by 6-inch color photograph scanned in high resolution at 2,400 dots per inch and 16 million colors (24 bits for color). How far (percentage) would you have to compress this image to fit into 4 MB of available RAM?

d) A 15-minute explanation of a spreadsheet recorded with the PC audio recorder. Make and save a 30-second recording and use the file size to estimate a 15-minute recording.

e) Your favorite half-hour TV show in digital form, how many bytes of storage would it take? Extra credit: How much space would it take if you remove the commercials? (Hint: time the commercials).