HESI A2 Math

Correct Answer: B

Rationale: To calculate the interest earned on a principal of $1,000 with a 5% annual interest rate, you multiply the principal by the interest rate: $1,000 x 0.05 = $50. Therefore, the correct answer is B, $50. Choice A is incorrect as it miscalculates the interest. Choice C overestimates the interest earned. Choice D is close, but $55 is not the correct calculation based on the given information.

Correct Answer: B

Rationale: The correct answer is B (106.4). To calculate the rate of calories burned per mile, we divide the total calories burned (2276) by the total distance covered (21.4 miles). 2276 calories ÷ 21.4 miles = 106.4 calories/mile. Choice A is incorrect as it is slightly lower than the correct calculation. Choice C is also incorrect as it is more precise than necessary and introduces unnecessary decimal points. Choice D is incorrect as it is too precise and unnecessary for this calculation.

Correct Answer: B

Rationale: The correct answer is B: 2 tablets. To reach the prescribed 500 mg dosage, two 250 mg tablets should be given. This is because 250 mg + 250 mg = 500 mg, meeting the prescription requirements accurately. Choices A, C, and D are incorrect because they do not add up to the required 500 mg dosage. Option A (3 tablets) would result in 750 mg, option C (4 tablets) would total 1000 mg, and option D (5 tablets) would equal 1250 mg, all exceeding the prescribed amount. Hence, the correct answer is 2 tablets to achieve the precise 500 mg dosage.

Correct Answer: B

Rationale: The correct answer is B (6:00 PM). Taking the medication 12 hours apart from the first dose at 8:00 AM ensures it's evenly spaced throughout the day. 6:00 PM is the most convenient time as it allows for the second dose without disrupting sleep, as it falls after dinner but before bedtime. Choice A (4:00 PM) is too early, which may lead to missing the second dose during the evening. Choices C (8:00 PM) and D (10:00 PM) are too late and might interfere with sleep if taken too close to bedtime. Thus, B is the best option for maintaining the medication schedule effectively.

Correct Answer: A

Rationale: To calculate the distance traveled, multiply the speed (60 mph) by the time (2.5 hours): 60 mph * 2.5 hours = 150 miles. Therefore, the correct answer is B. Choice A (120 miles) is incorrect as it is lower than the correct calculation. Choices C (180 miles) and D (170 miles) are incorrect as they are higher than the actual distance traveled.