An easy one and then one to make you iRate!
Difficulty: Rates and people going every which way ... whatever. Complex but not terribly difficult.
Standard instructions for this series: No calculator allowed. Express answers in reduced form. Rationalize denominators. Radicals must be reduced. All numbers are base ten unless otherwise specified. Do not approximate radicals or π. Leave such answers as 1025π or √39, for example. Source: UVM Math Contest
answer 09 and answer 33.