To calculate the total cost using the equation \( c = 15 + 3x \), where:
- \( c \) is the total cost,
- \( 15 \) is the flat rate for a lane,
- \( 3 \) is the fee per shoe rental,
- \( x \) is the number of shoe rentals.
In this case, you want to find the cost for 4 shoe rentals (i.e., \( x = 4 \)).
Now, substitute \( x \) into the equation:
\[ c = 15 + 3(4) \]
First, calculate \( 3(4) \):
\[ 3(4) = 12 \]
Now add that to the flat rate:
\[ c = 15 + 12 = 27 \]
Therefore, the total cost for getting a lane and four shoe rentals is $27.00.
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