0.5 Hz Bandpass RC Filter
Since this is not an answer, it should be a comment. But, this "comment" is too long and detailed for a comment.

(1) The equations for the filter in the 3rd image do not include the effect of load resistor in the 1st image schematic.

(2) This is not so much a bandpass filter but, rather, the sum of a 2nd order low-pass and a 1st order bandpass (as can be seen by writing the transfer function as two separate fractions).

(3) I'm not sure what "corner frequency" is in this context.  For a high-pass or low-pass filter, the context is clear.  For this, I'm not so sure.

Have you left out some details of the problem?

(Also, did you put all this off to nearly the last minute?)