In: Advanced Math
According to modern science, Earth is about 4.5 billion years old and written human history extends back about 10,000 years. Suppose the entire history of Earth is represented with a 10-meter-long timeline, with the birth of Earth on one end and today at the other end. a. What distance represents 1 billion years? b. How far from the end of the timeline does written human history begin?
A certain antihistamine is often prescribed for allergies. A typical dose for a 100-pound person is 19 mg every six hours. Complete parts (a) and (b) below. a. Following this dosage, how many 12.4 mg chewable tablets would be taken in a week? b. This antihistamine also comes in a liquid form with a concentration of 12.4 mg/8 mL. Following the prescribed dosage, how much liquid antihistamine should a 100-pound person take in a week?