exam Maths Puzzle Numerical Ability

What are they asking me when they ask Re(2e^((i*pi)/3))? Same question for Im(some numbers). The Re() and Im() notation are new. It seems to me that I should drop all parts with

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exam Other Question

I keep getting stuck on the following word problem. Can you please help :0)

According to data from the U.S. Department of Agriculture, the annual per capital consumption of red
Divide and simplify.

a^2/a^15