Verified Answer :

apologiabiology

double every year
year one
4 times 2
year 2
4 times 2 times 2 aka 4 times 2^2
year 3
4 times 2 times 2 times 2 aka 4 times 2^3
obviously


at year 'n' the number of rabbits will be
4 times 2^n

olemakpadu

Yolanda initially owns 4 rabbits.

For year 0 she has  4 rabbits.

Year 1 = 42 = 42¹= 8      since it doubles after every year, it will be multiplied by 2

Year 2 = 422 = 42² = 16

Year 3 = 4222 = 42³ = 32

Year 4 = 42222 = 42⁴ = 64

This is a kind of Geometric Progression.

Year  n = 4*(2ⁿ)

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