Find the rate of change of total profit, in dollars, with respect to time where R(:c) C(z) = 0.082z* + 0.5z + 90, when & = 45 and 2 = 22, dt L e oo Question Help: Video Submit Question = 8z and Find the rate of change of total profit, in dollars, with respect to time where R(z) = 80z 0.5z* and dx C(z) = 20z + 4, when = = 45 and 7o 70