To represent the amount of money in the bank after Christine and Ty both add their quarters, we first need to understand that each quarter is worth $0.25.
- Christine adds C quarters: This is equivalent to adding \(0.25C\) dollars.
- Ty adds T quarters: This is equivalent to adding \(0.25T\) dollars.
- The initial amount in the jar: This is $28.
Therefore, the total amount of money in the bank after both of them have added their quarters can be expressed as:
\[ 0.25C + 0.25T + 28 \]
So the correct response is:
0.25C + 0.25T + 28