You have been called to the scene of an 83-year-old woman with a high fever who reports chills and shortness of breath. She is tachypneic and showing signs of pain upon inspiration. You talk with her a bit and she seems confused of where she is, who she is, or who you are. Based on this presentation, the patient likely has: A. tuberculosis.
B. croup.
C. pneumonia.
D. pertussis.

it is D)

Explanation:

Pertussis is a problem with the lungs, and can can cause fever, mild cough, and runny noses.

a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m