Final answer:
After trading cards with Madison and receiving additional cards from his sister, Salvatore has a total of 60 trading cards.
Step-by-step explanation:
The question asks us to calculate the total number of trading cards Salvatore has after a series of transactions. Initially, Salvatore has 50 trading cards for his birthday. Then, he trades cards with Madison: he gives away 22 cards and receives 18 cards. Mathematically, we could say that Salvatore's total number of cards changed by +18 (received from Madison) and -22 (given to Madison), resulting in a net change of -4 cards. After this trade, Salvatore's number of cards is 50 (original amount) + (-4) (net trade result), which equals 46 cards. Lastly, Salvatore's sister gives him 14 more cards. Therefore, we add these 14 cards to his current total, resulting in 46 (after trade) + 14 (from sister) = 60 trading cards. Thus, the answer is Salvatore now has 60 trading cards, which corresponds to option c.