For this case we have the following function: d (x) = 7x ^ 3 - 6x ^ 2 We evaluate the function for x = 4. We have then: d (4) = 7 * (4) ^ 3 - 6 * (4) ^ 2 Rewriting we have: d (4) = (4 ^ 2) * (7 * (4) - 6) d (4) = 352 Answer: the vaule of d (4) is: d (4) = 352