(1 point) At a discount brokerage, a stock purchase or sale worth up to (and including) $15000 incurs a brokerage fee of 1% of the value of the transaction. A transaction worth more than $15000 incurs a fee of $150 plus 0.5% of the amount exceeding $15000. Note that for a fraction of a cent, the brokerage always charges the customer a full penny. You wish to buy 100 shares of a stock whose price D in dollars has PMF PD(d) = { 1 1/3 d = 149.75, 150, 150.25, otherwise. 0 (a) Find the PMF of C, the cost of buying the stock (including the brokerage fee).