A patient is given 800 mg of ibuprofen. The average half-life of ibuprofen is about 1.8 hr. Write an exponential model of the form P(t)= Pe that represents the amount of Ibuprofen in the patient's bloodstream in thours after the medicine is administered. Round the value of k to five decimal places. Then use the model to determine how much Ibuprofen will be in the patient's bloodstream after he is given a second dose of 800 mg in 4 hr after the first dose. Round your answer to two decimal places. Select an answer and submit. For keyboard navigation, sise the up/down arrow keys to select an an The patient has about 971.45 mg of Ibuprofen in his bloodstream a b C d The patient has about 171.45 mg of ibuprofen in his bloodstream. The patient has about 1271,45 mg of Ibuprofen in his bloodstream The patient has about 471.45 mg of Ibuprofen in his bloodstream. O Fulhscree Technetium-99m is the most commonly used medical radioisotope. It is used as a radioactive tracer that can be detected in the body by gamma cameras. It has a half-life of 6 hr, which is ideal to minimize radiation exposure to the patient. If a bone scan procedure injects 740 MBq (millibecquerel) into a person, what exponential model represents the amount of the isotope that remains after thours? Use the model to determine how much remains in the person after & hr. (Use P(t): Pe Select an answer and