1. [-/2 Points] DETAILS BERRAPCALCBR7 4.R.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A thermos bottle that is chilled to 39 degrees Fahrenheit and then left in a 90-degree room will warm to a temperature of T(t) = 90 - 51e . degrees after t hours. Find the rate of change (in degrees per hour) of the temperature at the following. (Round your answers to one decimal place.) (a) at time t = 0 degrees per hour (b) after 5 hours degrees per hour Need Help? Read It 2. [-/2 Points] DETAILS BERRAPCALCBR7 4.R.036. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A patient receives an injection of 9.5 milligrams of a drug, and the amount remaining in the bloodstream t hours later is A(t) = 9.5e.". Find the instantaneous rate of change (in milligrams per hour) of this amount under the following conditions. (Round your answers to two decimal places.) (a) immediately after the injection (time t = 0) milligrams per hour (b) after 5 hours milligrams per hour Need Help? Read It Submit