The number of decks of popular trading cards is a function f of the number of days d since the shipment arrived.
Calculate the average rate of change from day to day 20.
A. -0.012 decks per day
B. -83.1 decks per day
C. 83.1 decks per day
D. 0.012 decks per day

The number of decks of popular trading cards is a function f of the number of days d since the shipment arrived Calculate the average rate of change from day to class=