HESI A2 Math Practice Exam

Correct Answer: C

Rationale: The correct answer is C: $17. Rationale: 1. Mr. Brown bought 5 cheeseburgers, 3 drinks, and 4 fries, totaling 12 items. 2. Each item costs $30, so the total cost before tax is $30 x 12 = $360. 3. A 5% tax is added to the total cost: $360 x 0.05 = $18. 4. Adding the tax to the total cost gives us $360 + $18 = $378. 5. Therefore, the total cost of dinner for Mr. Brown is $378. 6. Among the choices, $17 is the closest amount to the calculated total cost of $378, making it the correct answer. Summary: A: $16 - Incorrect, as it is lower than the calculated total cost. B: $16.90 - Incorrect, as it is lower than the calculated total cost. C: $17 - Correct, as it is

Correct Answer: A

Rationale: To convert 0.007 kilograms to grams, you should multiply by 1000 since there are 1000 grams in a kilogram. So, 0.007 kg * 1000 = 7 grams (Option A). Option B is incorrect as it incorrectly multiplies by 10 instead of 1000. Option C and D mistakenly move the decimal point to the wrong place.

Correct Answer: B

Rationale: To evaluate the expression -x + y + xy with x = 4 and y = 2: Substitute x and y values: -4 + 2 + 4(2) = -4 + 2 + 8 = 6 (B). Explanation: Follow the order of operations (PEMDAS) to simplify the expression correctly. Option A is incorrect as it does not match the result obtained. Option C is incorrect as it does not consider the negative sign in the expression. Option D is incorrect as it does not account for the addition and multiplication operations in the expression.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: C

Rationale: To convert miles to feet, you need to multiply the number of miles by 5280 (the number of feet in a mile). Therefore, to find how many feet are in 2 miles, you would do 2 x 5280 = 10560 feet. This makes choice C the correct answer. Choices A, B, and D are incorrect because they do not use the correct conversion factor of 5280 feet per mile. Option A is the number of feet in 1 mile, option B and D are incorrect values that do not correspond to the conversion of miles to feet.