HESI A2
HESI A2 Math Practice Test 2023
1. A rectangular bandage measures 5cm by 8cm. What is the area covered by the bandage?
- A. 10cm
- B. 13cm
- C. 40cm^2
- D. 64cm^2
Correct answer: D
Rationale: Rationale: To find the area of a rectangle, you multiply the length by the width. In this case, the length of the bandage is 8cm and the width is 5cm. Area = length x width Area = 8cm x 5cm Area = 40cm^2 Therefore, the area covered by the bandage is 40cm^2.
2. If 3 nurses can care for 15 patients, how many nurses are needed for 25 patients?
- A. 4
- B. 5
- C. 6
- D. 7
Correct answer: B
Rationale: To determine how many nurses are needed for 25 patients, set up a proportion: 3 nurses / 15 patients = x nurses / 25 patients. Cross multiply to solve for x: 3 * 25 = 15 * x. This simplifies to 75 = 15x. Divide both sides by 15 to find x = 5. Therefore, 5 nurses are needed for 25 patients. Choices A, C, and D are incorrect as they do not correspond to the correct calculation based on the given proportion.
3. What does 'Compensatory' mean?
- A. Harmful
- B. Offsetting or making up for something
- C. Adding unnecessary work
- D. Hindering
Correct answer: B
Rationale: The term 'Compensatory' means offsetting or making up for something. In this context, it refers to the act of providing something in order to make up for a deficiency or loss. It is not related to being harmful, hindering, or adding unnecessary work. 'Harmful' (Choice A), 'Adding unnecessary work' (Choice C), and 'Hindering' (Choice D) are incorrect as they do not align with the meaning of 'Compensatory.'
4. The car that he had seen at the Ford dealer was the one that he finally decided to _____.
- A. buy
- B. rent
- C. lease
- D. sell
Correct answer: A
Rationale: The correct answer is 'buy' because it is the appropriate verb for purchasing a car. In this context, the person saw a car at the Ford dealer and decided to buy it, indicating ownership. Choices B, C, and D are incorrect because 'rent,' 'lease,' and 'sell' do not fit the context of deciding to acquire a car for ownership. Renting and leasing involve temporary possession, while selling involves transferring ownership to another party.
5. Physical factors such as temperature and pH can alter enzyme activity because they have an effect on the enzyme's ___________.
- A. acidity
- B. shape
- C. chemistry
- D. substrate
Correct answer: B
Rationale: Physical factors such as temperature and pH can alter enzyme activity by affecting the enzyme's shape. Enzymes rely on their specific shapes to function properly and catalyze reactions. Any changes in temperature or pH can disrupt these shapes, causing the enzyme to become denatured and lose its functionality. Therefore, alterations in temperature and pH can impact enzyme activity by directly affecting their shapes. Choices A, C, and D are incorrect because while pH can affect acidity and chemical properties of the enzyme, and temperature can influence the enzyme-substrate interaction, the primary reason for enzyme activity alteration due to temperature and pH is the change in the enzyme's shape.
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