ATI TEAS Math Practice Test

Correct Answer: C

Rationale: To determine the correct answer, we use the ratio of mg to mL in the concentrated drops. 80 mg is in 0.8 mL, so the concentration is 100 mg per 1 mL. Since the child needs 240 mg, we divide 240 by 100 to find the volume needed, which is 2.4 mL. Therefore, the correct answer is C. Choice A (0.8 mL) is incorrect because that is the original volume, not the calculated dosage. Choice B (1.6 mL) is incorrect as it is half the correct dosage, not the full dosage of 240 mg. Choice D (3.2 mL) is incorrect as it is double the correct dosage, exceeding the required 240 mg for the child.

Correct Answer: A

Rationale: To simplify the expression, we first multiply: (3)(-4) = -12, (3)(4) = 12. Substitute these values back into the expression: -12 + 12 - 1 = -1. Therefore, the correct answer is A (-1). Choices B, C, and D are incorrect as they do not match the calculated result of -1.

Correct Answer: C

Rationale: The independent variable is the variable that is manipulated or controlled by the researcher. In this case, the number of nurses in various specialties is the variable that is being studied and is not dependent on any other variable. Therefore, the correct answer is C - Nurse specialties. Choices A, B, and D are incorrect as they are either specific specialties or the dependent variable (number of nurses).

Correct Answer: A

Rationale: To simplify the expression, convert the mixed number 1 9/16 to an improper fraction: 1 * 16 + 9 / 16 = 25/16. Thus, the correct answer is A: 1 9/16. Option B (1 1/4) and Option C (2 1/8) do not represent the correct simplification of the given expression. Option D (2) is also incorrect as it does not accurately represent the simplified form of the expression.

Correct Answer: B

Rationale: To find the percentage of churchgoers attending Catholic Churches in Ellsford: 1. Calculate percentage attending Catholic Churches: (400/1450) * 100 ≈ 27.59% 2. Round to the nearest whole number: 28% Therefore, the correct answer is B (28%). Other choices are incorrect as they do not match the calculated percentage. A is lower, C and D are higher.