If that's the case, then R2 would be about -6.5 ohms.
I really hope the professor doesn't expect this, this class is for an applied engineering degree.
That's precisely what I thought. There's no mistake, the numbers are taken from the student's name and ID number. Each student solves the circuit with different numbers. It could work if the supply voltage was greater than 96 volts (allowing max current of 13.7 amps with a resistance of >7...
Background: I learned electronic theory 10 years ago from the Army, and have since worked in the electronics industry as a technician, for about the past 9 years. I'm working towards a BSEET (my interest lies in application, not research) and am required to take a few algebra based physics...