Need help answering #8.

Suppose that the seller, who is 35 years old, decides to sell this basketball at time it, sometime in the next 30 years: 0 S t S 30. At that time t, he will invest the money he gets from the sale in a bank account that earns an interest rate of r, compounded continuously, which means that after t years, an initial investment of B USD will be worth Be\"t USD. When he turns 65, he will take the money in his bank account for his retirement. Let M (t) be the amount of money in his account when he turns 65, Where t is the time at which he sells his basketball. o 8. Plot the function M (t) for several different values of 1', While holding 6 constant. What does a larger value of *3\" imply about the best time to sell the basketball? Is that consistent with the meaning of r