The following two parts are not related. a) Suppose [0&(23 + 2) + logb(9:n + 1) = 5. Find b such that a: = 7 is a solution to this equation. b] There were 100 rabbits on an island 3 months ago. Today there are 500 rabbits. If the number of rabbits increased exponentially, how many rabbits will be on this island 4 months from now? [Leave your answer in the exact form. Do not use calculators.)