To find the amount of change \( c \) that Mela receives after buying the shoes, you can use the following equation:
\[ c = 50 - 40.99 \]
Now, let's calculate the change:
\[ c = 50 - 40.99 = 9.01 \]
So, the amount of change Mela receives is \( \text{$}9.01 \).