Ibuprofen is a medicine used to relieve pain from various conditions such as headaches and muscle pains. Ibuprofen is eliminated from the bloodstream at a rate of 31.95% per hour. Suppose you take 400 milligram tablets orally to relieve a bad headache.(a) Write a formula that represents the amount of Ibuprofen left in your bloodstream, f, measured inmg, t hours after you take the medicine.f (t) =____(b) Calculate the half-life of Ibuprofen by determining how long it will take for this medicine to become half its original amount. Round decimal to two places.