Pablo generates the function f(x)=3/2(5/2)exp x-1 to determine the xth number in a sequence. Which is an equivalent representation? a) f(x=1)=5/2f(x) b) f(x)=5/2f(x=1) c) f(x=1)=3/2f(x) d) f(x)=3/2f(x=1)