(1) Answers
f(x) = 15x + 4 x = -3: f(x) = 15x + 4 f(-3) = 15(-3) + 4 f(-3) = -45 + 4 f(-3) = -41 (x, f(x)) = (-3, -41) x = 0: f(x) = 15x + 4 f(0) = 15(0) + 4 f(0) = 0 + 4 f(0) = 4 (x, f(x)) = (0, 4) x = 2: f(x) = 15x + 4 f(2) = 15(2) + 4 f(2) = 30 + 4 f(2) = 34 (x, f(x)) = (2, 34)
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