Let:
C = Total cost
b = price for the shoe rentals = $15
g = Number of games
a = Price of each game = $4
a)

b) Since:

The slope represents an increase in cost.
c) The y-intercept represents the $15 cost up front
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Answer:
Blank 1:

Blank 2:
The slope represents an increase in cost.
Blank 3:
The y-intercept represents the $15 cost up front