Pablo generates the function f(x) = 3/2 (5/2)^x-1 to determine the xth number in a sequence

1. f(x+1) = 5/2 f(x)

2. f(x) = 5/2 f(x+1)

3. f(x+1)=3/2 f(x)

4 f(x) = 3/2 f(x+1)
Help PLease

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