20 points worth the amount left to be raised by a telethon, in dollars, after p pledges have been received is $10,000 - $50p. which statement is correct? a. for every pledge received, the amount needed to be raised decreases by $10,000. b. for every pledge received, the amount needed to be raised increases by $10,000. c. for every pledge received, the amount needed to be raised decreases by $50. d. for every pledge received, the amount needed to be raised increases by $50.