If f(x) = -9x+5 and g(x) = 7+ 5x find a, b, c, and d. a. (f+g)(x), b. (f - g)(x), c. (f+g)(4), and d. (f- g)(-2) a. (f+g)(x) = b. (f-g)(x) = c. (f+g)(4) = d. (f-g)(-2) =

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