In the given equation \(35x + 55y\), where \(x\) represents the number of pairs of shoes and \(y\) represents the number of jerseys, we can see that the coefficients indicate the prices per item.
- The coefficient of \(x\), which is 35, represents the cost per pair of shoes.
- The coefficient of \(y\), which is 55, represents the cost per jersey.
Therefore, Antoine spends $35 per pair of shoes.