Problem #8: It is estimated that t months from now, the number of weekly hits to a certain web site will be C(1) = 100r~ + 300t + 4000. (a) Derive an expression for the rate at which the number of hits is changing with respect to time t months from now. (b) At what rate will the number of weekly hits be changing with respect to time 8 months from now? (c) By how much will the number of hits actually change during the 9th month