(a) Let B = 5750(1.045)' give the balance of a bank account after t years. If the formula for B is written B=5750e, estimate the value of k correct to four decimal places. k (b) The balance of a bank account after t years is given by the formula B=87500082. If the formula for B is written B=87508', find & exactly, and give the value of b correct to decimal places. b= 2. (to 4 decimal places)