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Use the following functions to: find, simplify, and identify the domain of each of the function combinations. f (x) = x2 - 13x and g (x) = x + 2 a.) Find f + g and the domain of f + g. b.) Find f - g and the domain of f - g. c) Find f . g and the domain of f . g. d.) Find - and the domain of I.NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by h (t) = 4.9t2 + 220: + 262. a.) Assuming that the rocket will splash down into the ocean, at what time does splashdown occur? In.) How high above sea-level does the rocket get at its peak? Find a degree 3 polynomial with real coefficients having zeros 2 and 7i and a lead coefficient of 1. Write in expanded form