It depends on the iPhone's capacity (8gb, 16gb, etc.), and what kinds of apps you are using, since each app takes up a different amount of space.
You can have 16 folders on a page and 12 apps in a folder and 11 pages of folders and 4 folders at the bottom so about 1,980 on the home screen pages after you fill them you can have more and have to search for them
Yes. There is a Pages app and a group of Microsoft Office Apps.
I think I just maxed out my 8 gig iPhone. It will only hold 9 pages of apps. So 144 total.
By the time I answer this question there are ~285,000 iPhone / iPod Touch apps on the iTunes App Store.
easily 16 apps per page
if all you have is apps, then 16 GB.
There a many good iPhone blog apps. The most common blog app would be snap guide.
As of May 17, 2010, there are 202,064 apps for the iPhone and 6599 for the iPad. Go to appshopper.com to find current numbers
it has 27 apps
Apps are constantly being created, so roughly 10 apps are made everyday.
The dock is the four apps that stay on the bottom of your screen. If you have iOS 5 or 6 on your iPhone 5 you can have 11 pages of apps. Each page can have 20 folders. That is 220 folders. Add the four folders from your dock to get 224 folders. Each folder can have 16 apps. 224 folders with 16 apps in each folder makes 3568 apps. If your iPhone 5 has iOS 7 or newer you can have 15 pages of apps. Each page can have 20 folders. That is 300 folders. Add the four folders from your dock to get 304 folders. Each folder can have 135 apps. 304 folders with 135 apps in each folder is 41040 apps.
You buy the iPhone app