TEAS Practice Test Math

Correct Answer: C

Rationale: The correct answer is C because it demonstrates a negative correlation between two variables. As tennis balls age, they tend to have less bounce, indicating that an increase in one variable (age) leads to a decrease in the other variable (bounce). This negative correlation shows an inverse relationship between the age of the tennis balls and their bounce level. Choices A, B, and D do not demonstrate a negative correlation as they either show a positive correlation or do not show a correlation at all between the variables mentioned.

Correct Answer: C

Rationale: The correct answer is C: Dependent. In this study, the weight of the babies is the variable being measured and studied in relation to different time intervals after birth. The weight of the babies depends on the time intervals, making it the dependent variable. Other choices are incorrect because: A: Independent variable is the variable that is manipulated or controlled by the researcher, in this case, time intervals are the independent variable. B: Control variable is a variable that is kept constant to prevent it from influencing the results, weight is not a control variable. D: Constant is not applicable in this context as weight is not a constant value in the study, it varies with time intervals.

Correct Answer: B

Rationale: To find the ratio of girls to boys, we divide the number of girls by the number of boys. In this case, there are 26 girls and 22 boys. So, the ratio of girls to boys is 26:22, which simplifies to 13:11. Therefore, choice B (13:11) is the correct answer. Choice A (26:11) is incorrect because it incorrectly combines the total number of girls with the number of boys. Choice C (13:22) is incorrect because it reverses the order of girls and boys in the ratio. Choice D (11:13) is incorrect because it flips the ratio of girls to boys.

Correct Answer: A

Rationale: To find the expression for the length of the rectangle in terms of x, we first note that the length is six less than two times the width. Therefore, the expression for the length would be 2x - 6. This is because the length is equal to 2 times the width (2x) minus 6. Therefore, option A (2x - 6) is the correct answer. Option B (6-2x) is incorrect because it represents the width minus 2 times the width, which is not the correct relationship. Option C (6x-2) is incorrect because it represents 6 times the width minus 2, which is not the correct relationship. Option D (3x-4) is incorrect because it represents 3 times the width minus 4, which does not match the given relationship between the length and the width.

Correct Answer: D

Rationale: The correct answer is D: 25 g. A pencil is a lightweight object typically weighing in grams, not kilograms, centimeters, or milligrams. The weight of 25 g aligns with the standard weight of a pencil. Kilograms (A) are too heavy, centimeters (B) are units of length, and milligrams (C) are too light for a pencil's weight. So, the most likely weight of a pencil is 25 grams.