iPhone app submission process
The approval process varies and there’s no exact number. The factor that determines this is the number of apps in the approval queue. I don’t remember where I read that 95% of the apps where approved within 14 days. I believe this came in a “message” in the dev accounts. But it was more than a year ago. 

You can see more information in your Developer Account by going to the approval page. (You need a paid account to access that).

I haven’t submitted an iPhone App but in my near experience, it’s around two weeks.