Find an Exponential Function of the Form F (X) = $y = 5 \left( \frac { 1 } { 125 } \right) ^ { x }$

Multiple Choice

Find an exponential function of the form f (x) = ba ^x that has the given y-intercept and passes through the point P: y-intercept = 125; P (3,1) ;

A) $y = 5 \left( \frac { 1 } { 125 } \right) ^ { x }$
B) $y = \frac { 1 } { 125 } \left( \frac { 1 } { 5 } \right) ^ { x }$
C) $$y = 125 \left( \frac { 1 } { 5 } \right) ^ { x }$$
D) $y = 5 \left( \frac { 1 } { 5 } \right) ^ { x }$
E) $y = 125 \left( \frac { 1 } { 125 } \right) ^ { x }$