brazil-enem 2016 Q172

brazil-enem · Other · enem__day2 Curve Sketching Identifying the Correct Graph of a Function
A pharmaceutical company conducted a study of the efficacy (in percentage) of a medication over 12 hours of treatment in a patient. The medication was administered in two doses, with a 6-hour interval between them. As soon as the first dose was administered, the medication's efficacy increased linearly for 1 hour, until reaching maximum efficacy (100\%), and remained at maximum efficacy for 2 hours. After these 2 hours at maximum efficacy, it began to decrease linearly, reaching 20\% efficacy upon completing the initial 6 hours of analysis. At this moment, the second dose was administered, which began to increase linearly, reaching maximum efficacy after 0.5 hours and remaining at 100\% for 3.5 hours. In the remaining hours of analysis, the efficacy decreased linearly, reaching 50\% efficacy at the end of treatment.
Considering the quantities time (in hours) on the horizontal axis and medication efficacy (in percentage) on the vertical axis, which graph represents this study?
(A), (B), (C), (D), (E) [see figures]
A pharmaceutical company conducted a study of the efficacy (in percentage) of a medication over 12 hours of treatment in a patient. The medication was administered in two doses, with a 6-hour interval between them. As soon as the first dose was administered, the medication's efficacy increased linearly for 1 hour, until reaching maximum efficacy (100\%), and remained at maximum efficacy for 2 hours. After these 2 hours at maximum efficacy, it began to decrease linearly, reaching 20\% efficacy upon completing the initial 6 hours of analysis. At this moment, the second dose was administered, which began to increase linearly, reaching maximum efficacy after 0.5 hours and remaining at 100\% for 3.5 hours. In the remaining hours of analysis, the efficacy decreased linearly, reaching 50\% efficacy at the end of treatment.

Considering the quantities time (in hours) on the horizontal axis and medication efficacy (in percentage) on the vertical axis, which graph represents this study?

(A), (B), (C), (D), (E) [see figures]