1. A nurse needs to administer medication to a patient who weighs 170 pounds. If the dosage is 2 milligrams per kilogram, how much medication should the nurse administer in milligrams? (Round your answer to the nearest whole number.) Hint: 1 pound = 0.454 kilograms
A. 77 milligrams
B. 374 milligrams
C. 154 milligrams Correct
D. 187 milligrams
Explanation
Step 1: Convert pounds to kilograms: 170 lb x 0.454 kg/lb = 77.18 kg. Step 2: Calculate dosage: 77.18 kg x 2 mg/kg = 154.36 mg. Step 3: Round to the nearest whole number: 154 mg.
2. A car is traveling at a constant rate of 30 miles per hour. Which of the following is the number of miles the car travels in 1 hr and 45 min?
A. 43.5 miles
B. 30 miles
C. 52.5 miles Correct
D. 60 miles
Explanation
Step 1: Convert 1 hour 45 minutes to hours: 45 min / 60 = 0.75 hours, so total 1.75 hours. Step 2: Calculate distance: speed x time = 30 mph x 1.75 hours = 52.5 miles.
3. Which of the following values best approximates the weight of the oranges in the image below? [Image: Scale with bowl of ~5-6 oranges pointing between 1 and 2 pounds]
A. 0.5 pounds
B. 1 pound
C. 2.5 pounds Correct
D. 2 pounds
Explanation
The image depicts a spring scale with a red bowl containing several oranges, and the needle points just past the 3 on the dial. Assuming a standard 3-pound scale where 12 marks 0 pounds, 3 marks 1 pound, 6 marks 2 pounds, and 9 marks 3 pounds, the needle's position indicates a weight slightly above 1 pound. Among the given options—0.5 pounds, 1 pound, 2 pounds, and 2.5 pounds—the value that best approximates the reading is 1 pound, as the needle has not reached halfway toward the 2-pound mark and the question asks for the closest reasonable estimate.
4. Which of the following inequalities shows the correct relationship between the fractions 6/15, 4/8, and 6/10?
A. 6/10 < 4/8 < 6/15
B. 6/15 < 4/8 < 6/10 Correct
C. 4/8 < 6/15 < 6/10
D. 6/15 < 6/10 < 4/8
Explanation
Step 1: Convert fractions to decimals: 6/15 = 0.4, 4/8 = 0.5, 6/10 = 0.6. Step 2: Order from least to greatest: 0.4 < 0.5 < 0.6. Step 3: Thus, 6/15 < 4/8 < 6/10.
5. Which of the following percentages is equivalent to 0.05?
A. 0.50%
B. 0.00%
C. 5% Correct
D. 0.01%
Explanation
Step 1: Convert decimal to percentage: 0.05 x 100 = 5%.