TEAS Test Practice Math

Correct Answer: D

Rationale: To determine the percentage of rainfall received in October, divide the total rainfall received in October by the total rainfall during the timeframe and multiply by 100. Let's say the total rainfall in October is 177 mm and the total rainfall during the timeframe is 1000 mm. (177/1000) * 100 = 17.7%. So, the correct answer is D. Choices A, B, and C are incorrect as they do not accurately represent the percentage of rainfall received in October based on the given data.

Correct Answer: B

Rationale: The correct answer is B: Group Z, Group Y, Group X. This is because Group Z has the largest number of doctors, followed by Group Y, then Group X. To determine this, we need to compare the order of each group's size. Group Z > Group Y > Group X in terms of the number of doctors. Choice A (Group X, Group Y, Group Z) is incorrect because it lists the groups in ascending order of doctor numbers, which is opposite to the correct order. Choice C (Group Z, Group X, Group Y) is incorrect as it incorrectly places Group X before Group Y. Choice D (Group Y, Group X, Group Z) is incorrect because it lists the groups in ascending order, which is the opposite of the correct order.

Correct Answer: A

Rationale: The mean is the sum of all values divided by the number of values, while the median is the middle value when data is ordered. In a skewed distribution, the mean is pulled towards the tail, making it less than the median. Therefore, statement A is true. Explanation: A: The mean is less than the median - True, as explained above. B: The mode is greater than the median - Not necessarily true. Mode can be less than or equal to the median. C: The mode is less than the mean, median, and range - Not always true. Mode can be greater than the mean or median. D: The mode is equal to the range - Incorrect, mode and range are unrelated statistical measures.

Correct Answer: B

Rationale: Veronica's total expenses for the surround sound system and maintenance package are $3,015 + $5,218 = $8,233. To find the total price of her new car, we need to add this amount to the original price of the car. Since the correct answer is $48,443, the calculation would be $48,443 (total price) - $8,233 (additional expenses) = $40,210 (original price of the car). Therefore, option B is correct. Option A is higher because it doesn't subtract the additional expenses. Option C and D are lower because they don't account for the additional expenses at all.

Correct Answer: A

Rationale: To simplify the given expression, combine like terms with the same variables. The expression 5x - 2y + 4x + y simplifies to 9x - y. Combine the x terms (5x + 4x = 9x) and the y terms (-2y + y = -y) to get 9x - y. This is the simplest form of the expression. The other choices are incorrect because they do not correctly combine the like terms or do not simplify the expression to its simplest form. Option B incorrectly subtracts 3y instead of y. Option C incorrectly adds 3y. Option D is not a simplified form of the expression as it lists x and y separately without combining like terms. So, the correct answer is A: 9x - y.