Two arcades charge an entrance fee and a fee per game.
At Arcade A, the total cost y (in dollars) of playing x games
is represented by the linear function y = 0.5x + 8. The
table shows the total cost of playing x games at Arcade B.

a. Which arcade has the higher fee per game?
the higher entrance fee?

b. Which arcade has the higher total cost for 12 games?