Answer: Jalissa's mom spent $9.65 at the coffee shop.
Explanation: The total cost of the coffee can be calculated as follows:
First cup of coffee = $4.15
Two refills = 2 x $1.25 = $2.50
Total coffee cost = $4.15 + $2.50 = $6.65
Adding the cost of the bagel gives : Total cost = $6.65 + $3.50 = $10.15
Finally, subtracting the $0.50 discount gives: Total cost with discount = $10.15 - $0.50 = $9.65
Therefore, Jalissa's mom spent $9.65 at the coffee shop.