\fDrug Concentration When a drug is injected into the bloodstream of a patient through the right arm, the drug concentration in the bloodstream of the left arm t hours after the injection is approximated by of t3+b' on) = for some 1uralues r]- and [3. Lab tests ShDW that those values for Artecoadipine are d = [1.28 and b = 4.45, for D sf. t s: 24. The model suggests that after injection, the drug concentraon of Artecoadipine in the left arm is increasing unl some time T hours. and decreasing afterward. Find T. Round to 2 decimal places. hours