To model the situation where Fiona bought some pairs of socks and belts, we can set up an equation based on the total amount she spent on these items.
Let:
- \( a \) be the number of pairs of socks,
- \( b \) be the number of belts.
The total cost for the socks would be \( 4.95a \) (since each pair of socks costs $4.95), and the total cost for the belts would be \( 6.55b \) (since each belt costs $6.55).
According to the problem, Fiona spent a total of $27.95. Therefore, the equation that models the situation can be written as:
\[ 4.95a + 6.55b = 27.95 \]
So the correct response is:
4.95a + 6.55b = 27.95