For each order, the web site applies a 7.7% sales
tax to the price of the cards, plus a one-time
mailing fee of $5.95. Based on the information in
the table, what will be the total cost for an order
for 280 cards?
COST OF CARDS
Number
of Cards
Price
(dollars)
20 13
40 26
60 39
100 65
Pls help