A function fis given. f(x) = x + 8x + 7 (a) Use a graphing calculator to draw the graph of f. -10 -10 -10 -15 -15 -20 - 20 10 -10 10 10 -5 -5 -10 -10 - 15 -15 -20아 -20 (b) Find the domain and range of f from the graph. (Enter your answers using interval notation.) domain range Need Help? Read it Watch t

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