1. Mick Gordon, a famous basketball player, agreed to participate in a basketball shoot-off for charity. A local bank committed to a $15,000 donation plus an additional $20 for every shot Mick made in a one-hour time period. The cost function to describe the total donation to be made by the bank would be:

   	a.	y = $15,000
   	b.	y = $15,000 + $20x
   	c.	y = $15,000 - $20x
   	d.	y = $15,000x + $20