If an inverting circuit has a gain of -10 and an input resistance of 15 k'ohms what size is the feedback resistor?

 

If an inverting circuit has a gain of -10 and an input resistance of 15 k'ohms what size is the feedback resistor?

Ah...lemme see I knew that when I walked in here. Could it be 150K Ohms?

 

gain in case of inverting configuration is
g=-rf/rin
here,
gain = -10
rin =15K
so,
rf=150k