HESI A2 Math Practice Exam

Correct Answer: A

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: B

Rationale: To convert pints to ounces, we know that 1 pint is equal to 16 ounces. Therefore, 3 pints would be 3 x 16 = 48 ounces. This makes choice B the correct answer. Choice A (24 ounces) is incorrect as it represents only 1 pint, not 3. Choice C (32 ounces) and choice D (64 ounces) are also incorrect as they do not accurately reflect the conversion of pints to ounces.

Correct Answer: D

Rationale: To find what percent of 36 is 9, we divide 9 by 36: 9/36 = 0.25. To convert this decimal to a percentage, we multiply by 100: 0.25 x 100 = 25%. So, the correct answer is D (10%). Choice A (25%), B (20%), and C (15%) are incorrect as they do not correctly represent the relationship between 9 and 36.

Correct Answer: C

Rationale: To calculate the flow rate in drops per minute, we first convert the infusion time to minutes (4 hours = 240 minutes). Then, we multiply the total volume (500 ml) by the number of drops per milliliter (20) to get the total drops. Dividing total drops by total time gives the flow rate. Therefore, 500 ml x 20 drops/ml = 10,000 drops. Flow rate = 10,000 drops / 240 minutes = 41.67 drops/min. Rounding up, the correct answer is C: 50 drops/min. Choice A is incorrect as it is half the correct value. Choices B and D are incorrect as they are double and quadruple the correct value, respectively.

Correct Answer: C

Rationale: To evaluate the expression 3a^2 - 2ab + b^2 with a = 2 and b = -3: 1. Substitute a = 2, b = -3: 3(2)^2 - 2(2)(-3) + (-3)^2 2. Simplify: 3(4) + 12 + 9 = 12 + 12 + 9 = 33 Therefore, the correct answer is C (33). Other choices are incorrect because they do not yield the correct result when substituting a = 2 and b = -3.