c) find the domain of the inverse function please answer all attached

1. The profit P(x) of a cosmetics company, in thousands of dollars, is given by P(x) = -5x2 + 400x - 2550, where x is the amount spent on advertising in thousands of dollars. a) Calculate the average rate of change in profit on the interval 8 1. a) Find: f(-4) f(-3) + f(1)f(2). [C2] b) Find af If . f(3)-f(- 5)] . [T=3] c) Determine whether f (x) is discontinuous and, if so, where. [C=2] 4. The amount of radioactive material in a chemical sample at time t is given by the function A (1) = 800 .(7) , where DO. a) Find A" (25). [A 2] b) What is the end behaviour for this function and what does it mean in this example? [A 2] 5. The function F(C) = 1.8 C + 32, where C2 - 273, determines the Fahrenheit temperature as a function of the Celsius temperature C. a) Find the Fahrenheit temperature corresponding to 20 C. [A 1] b) Find the inverse of this function. [A 2] Property of CanSTEM Education Private School Inc. 2017-2018