When you evaluate the function f (x) = 4 • 7 ^ x for x = -1 you get: f (-1) = 4 * 7 ^ -1 f(-1) = 4* 1/7 f (-1) = 0.5714 The next part of the question is not clear. If it refers to the function at x = 2 then: f (2) = 4 * 7 ^ (2) f(2) =4*49 f (2) = 196 If it refers to it in x ^ 2 f (x ^ 2) = 4 * 7 ^ (x ^ 2)
