book Maths Puzzle Numerical Ability

If N(t)=N(0)a^pi^t

How would you determine:
1) N(0)
2) pi

Thanks

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book Other Question

jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 10 miles with the wind, and in the same amount of time runs 5 miles against the wind. what is the rate of the wind? the perimeter of a rectangle is 120ft. the length of the rectangle is twice than the width. find the length and the width of the rectangle.

120=2L + 2W
120-2(2W +2)+2W
120=4W+4+2W
120=4W+2W+4
116=W-- LOST