Answer:
B
Step-by-step explanation:

z = 3(cos π/2 + i sin π/2) =→

z⁷ =

$174,542 times $300 is equal to 52 362 600 U.S. dollars.<span>2</span>
P(a | b) = p(a ∩ b)/p(b) . . . . . a definition worth remembering
0.2 = p(a ∩ b)/0.5 . . . . . . . . fill in the given values
0.2*0.5 = 0.1 = p(a ∩ b)
p(a ∩ b) = 0.1