Please answer the following question based on the video:

Vicki took 400 mg of Ibuprofen to relieve knee pain. The amount (mg) as a function of elapsed time (hours) is .

Approximate the rate of change of the amount of Ibuprofen in Vicki’s body with respect to the number of hours elapsed when .

-35 mg/hour -35 mg 100 mg/hour 100 mg 25 mg/hour 25 mg