View Policies Show Attempt History Current Attempt in Progress Your answer is incorrect. For a function f(x), we know that /(19) = 66 andf' (19) = - 3 Estimate f(20),f (18), andf(25). /(20) = f(18) = 1 "(25 ) - e Textbook and Media Save for Later Attempts: 1 of 10 used Submit