Question

question 3 (1 point) if a patient takes 3 pain tablets twice a day for seven days and each tablet is 500 mg, how many tablets did the patient take? 21 tablets none are correct 3,000 mg/day 42 tablets 21,000 mg question 4 (1 point) if a glass contains 42 ml of water and an 20 g metal object placed in the glass causes the water level to rise by 15 ml, what is the density of the metal object? none are correct 0.75 g/ml 1.33 g/ml 300 g/ml 0.35 g/ml

Explanation:

Question 3

Step1: Calculate tablets per day

The patient takes 3 tablets twice a day. So the number of tablets per day is $3\times2 = 6$ tablets.

Step2: Calculate total tablets in 7 days

If the patient takes 6 tablets per day for 7 days, then the total number of tablets is $6\times7=42$ tablets.

Step1: Identify volume of metal object

The volume of the metal object is equal to the volume of water it displaces. The water - level rises by 15 ml, so the volume of the metal object $V = 15$ ml.

Step2: Use density formula

The density formula is $
ho=\frac{m}{V}$, where $m = 20$ g and $V = 15$ ml. Then $
ho=\frac{20}{15}=\frac{4}{3}\approx1.33$ g/ml.

Answer:

D. 42 tablets

Question 4