46. An experiment is conducted relating the time in hours and the amount of a drug remaining in the bloodstream. The following data points were recorded: \( (1,10),(3,9),(5,7),(6,5),(7,3),(9,1) \). How many milligrams of the drug remain in the bloodstream after 5 hours?
(a) 3 milligrams
(b) 7 milligrams
(c) 6 milligrams
(d) 9 milligrams.

Answer

Expert–verified

Hide Steps

Answer

\(\boxed{\textbf{(b) 7 milligrams}}\)

Steps

Step 1 ：\(\text{Given the data points, find the value of the drug remaining in the bloodstream at 5 hours.}\)

Step 2 ：\(\text{Data point at 5 hours is }(5,7)\).

Step 3 ：\(\boxed{\textbf{(b) 7 milligrams}}\)