<span>Housing expenses would be equal to $586.20.</span>
All in all, we are selecting from a pool of 17 members (4+9+4 = 17). So seeing we have 4 democrats, the probability would be 4/17.
Normally we would simplify the fraction from there but 4/17 is already the simplified form. Therefore that is already the answer.
Answer) n=-\frac{5\sqrt{3}i}{6}\approx -0-1.443375673i