Derek has already spent 23 minutes on the phone, and he expects to spend 1 more minute
with every phone call he routes. In all, how many phone calls does Derek have to route to
spend a total of 47 minutes on the phone?

The heir to the austrian throne, archduke franz ferdinand was gunned down by a young serbian terrorist. germany urged austria to declare war on serbia. russia mobilized against austria, then germany mobilized against russia. france and britain mobilized against germany. then young men such as adolf hitler volunteered in the war.