Given data:
The given table is shown.
The total cost for 1 month is,
x+1(y)=$32
x+y =32
y=32-x.....................(I)
Here, x is the fixed cost and y is monthly membership fees.
The total cost for 2 months is,
x+2y=44
Subtitute (32-x) for y in the above expression.
x+2(32-x)=44
x+64-2x=44
-x=-20
x=20
The value of y is,
y=12
Thus, the cost of monthly membership fees is $12.