36. How to Become a Millionaire Upon graduating from col- lege, Donna has no initial capital. However, during each year she makes deposits amounting to d = $1000 in a bank that pays interest at an annual rate of 8%, compounded continuously. (a) Find the future value, S(t), of Donna's account at any time. (b) What should be the value of the annual deposit d in order that the balance of Donna's account will be 1 million dollars when she retires in 40 years? (c) If d = $2500, what should be the value of r in order that Donna's account will have a balance of 1 million dollars in 40 years