Step-by-step explanation:
B(-2,3)
C(1,0)
F(-1,-2)
E(0,-4)
You multiply straight across, and one number is a fraction and the other is not.
He has 87 cards then he gets 9 more which is 96, he then gives 16 away which is 80, then he is given 3 which is 83 he sells all 83 cards to the collector & the collector gives him $124.50 each card is worth $1.50