$19.(6$ pts$)$ Your business has the following cash on hand at the end of the past four months:

$$ October$$ November$$ December$$ January

$$Cash holdings $$ $$260000$ $$220000$ $$210000$ $$175000$

$($a$)$ What is your average net burn rate?

$($b$)$ What is your runway?

$19$ b$.(2$ pts$)$ What might your burn rate be telling you?