The figure is being rotated 90° counterclockwise that's why it's now located in Q III. B remains the same since it's our turning point. Correct me if I'm wrong. I hope it helps.
Step-by-step explanation: he earned 3% on interest so that means the equation is 780 + 3% (correct me if i'm wrong) so 780 + 3% is $803.4 which is 803 dollars and 4 cents