TEAS 7 Math Practice Test

Correct Answer: B

Rationale: To simplify the expression, we follow the order of operations (PEMDAS). Step 1: 7 + 16 = 23 Step 2: 6 * 3 = 18, then (5 + 18) = 23 Step 3: Now, the expression becomes 23 - 23 - 10 * 2 Step 4: 23 - 23 = 0, and 10 * 2 = 20 Step 5: Finally, 0 - 20 = -20 Therefore, the correct answer is B (-20). Explanation for other choices: A: -42 - Incorrect because it doesn't follow the correct order of operations. C: 23 - Incorrect, as it doesn't account for all the operations in the expression. D: 20 - Incorrect, as it doesn't consider the subtraction and multiplication operations properly.

Correct Answer: B

Rationale: Correct Answer: B Rationale: In January, Dr. Lewis worked 20 shifts. In February, she worked 3 times as many shifts as in January (3 * 20 = 60 shifts). In March, she worked half the number of shifts she worked in February (1/2 * 60 = 30 shifts). Therefore, the equation should be shifts = (20)(3)(1/2) = 30, which accurately represents the number of shifts Dr. Lewis worked in March. Summary of other choices: A: Incorrect because it adds shifts for each month without considering the relationships between them. C: Incorrect because it multiplies January and February shifts but does not account for March being half of February. D: Incorrect because it incorrectly multiplies 3 and 1/2 without considering the total number of shifts in February.

Correct Answer: C

Rationale: The correct answer is C because in a negatively skewed distribution, the tail of the histogram extends to the left, indicating that there are more data points on the right side. In Group B, the histogram is negatively skewed, meaning it has a higher mean than Group A. Option A is incorrect because Group A is positively skewed, not negatively skewed. Option B is incorrect because Group A has a lower mean than Group B. Option D is incorrect because Group B has a higher mean than Group A due to its negatively skewed distribution.

Correct Answer: B

Rationale: Correct Answer: B ($48,443) Rationale: To find the total price of Veronica's new car, add the base price ($40,210) to the cost of the surround sound system ($3,015) and the maintenance package ($5,218). Therefore, $40,210 + $3,015 + $5,218 = $48,443. Summary of other choices: A: $50,210 - Incorrect as it only includes the base price of the car. C: $43,225 - Incorrect as it only includes the base price and the maintenance package. D: $40,210 - Incorrect as it only includes the base price of the car.

Correct Answer: B

Rationale: To determine the order of groups from smallest to largest, we need to compare the fractions given for each group. Given that 4/15 < 2/5 < 1/3: 1. Group Alpha (4/15) < Group Beta (2/5) < Group Gamma (1/3) Thus, the correct order is Group Alpha, Group Gamma, Group Beta (B). The rationale is based on comparing the fractions numerically to determine the relative sizes of the groups. The other choices are incorrect because they do not follow the order of fractions provided in the question, leading to incorrect group size comparisons.