Answer: 84 mm is MAYBE the answer.
That would be option D
The y intercepts are 1 and 4 and the slope are -1 and 2.
Answer:
0.0713 = 7.13% probability that the result is positive.
Step-by-step explanation:
Probability of a positive test:
91% of 1/650(has the disease).
7% of 1 - 1/650 = 649/650(does not have the disease). So

0.0713 = 7.13% probability that the result is positive.