Let's break down the expenses one by one:
The first cup of coffee costs $4.25
Two refills cost $2.25 x 2 = $4.50
A bagel costs $3.15
There was a $0.50 discount
To calculate the total cost, we can add up all these expenses and subtract the discount:
Total cost = ($4.25 + $4.50 + $3.15) - $0.50
Total cost = $11.40
Therefore, the total amount spent is $11.40.