HESI A2
HESI A2 Math 2024
1. A team from the highway department can replace 14 streetlights in 7 hours of work. If they work a 30-hour week at this job, in how many weeks will they replace all 120 downtown streetlights?
- A. 1½ weeks
- B. 2 weeks
- C. 2½ weeks
- D. 3 weeks
Correct answer: B
Rationale: If the team can replace 14 streetlights in 7 hours, it means they replace 2 streetlights per hour. In a 30-hour week, they can therefore replace 2 x 30 = 60 streetlights. To replace all 120 downtown streetlights, they will need 120 / 2 = 60 hours, which is equivalent to 60 / 30 = 2 weeks. Therefore, the correct answer is 2 weeks. Choice A, 1½ weeks, is incorrect because it doesn't consider the total number of streetlights that need to be replaced. Choice C, 2½ weeks, is incorrect as it overestimates the time needed. Choice D, 3 weeks, is incorrect as it underestimates the efficiency of the team in replacing streetlights.
2. The author describes cosmetics in each of the following cultures EXCEPT ___________.
- A. Greek
- B. Egyptian
- C. Roman
- D. Native American
Correct answer: D
Rationale: The author provides descriptions of cosmetic practices in Greek, Egyptian, and Roman cultures but does not mention Native American practices regarding cosmetics. This absence of information about Native American culture leads to the conclusion that option D is correct since it reflects a lack of discussion on that specific culture.
3. Which of the following processes represents a different level of defense compared to the others?
- A. A low pH in the stomach
- B. Cilia present in the trachea
- C. Body cells recognizing a pathogen
- D. Mucus present in the nasal cavity
Correct answer: C
Rationale: Among the listed processes, low pH in the stomach, cilia in the trachea, and mucus in the nasal cavity serve as physical barriers that form the first line of defense against pathogens. These barriers work to block pathogens from entering the body. On the other hand, body cells recognizing a pathogen involves the immune response, which operates at a different level of defense. This process is part of the adaptive immune response, where the body's immune cells identify, target, and eliminate specific pathogens to provide a specialized defense after the pathogens have breached the physical barriers. Therefore, body cells recognizing a pathogen represent a different level of defense compared to the other listed processes.
4. What is the meaning of the word tolerance as used in the last paragraph about Yoga?
- A. Open-mindedness.
- B. Approval.
- C. Endurance.
- D. Generosity.
Correct answer: C
Rationale: In this context, "tolerance" refers to the capacity to endure discomfort, particularly in relation to pain during yoga practices. The passage discusses how yoga improves pain tolerance, emphasizing the ability to withstand discomfort rather than any other meanings associated with the term, such as open-mindedness or approval.
5. Which of the following is not listed as a detail in the passage about A Short History of the CDC?
- A. Where the organization began.
- B. Who first ran the organization.
- C. When the organization changed its name.
- D. What divisions make up the current CDC.
Correct answer: D
Rationale: The passage does not provide specific details about the divisions that currently make up the CDC. Instead, it focuses on the organization's historical context, original goals, and overall mission. Thus, D is correct as it identifies information not covered in the passage.
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