To determine Maxwell's current balance after starting with a negative balance and spending additional money, we can set up the situation as a mathematical expression.
- Initial balance: -$47 (meaning he is $47 in debt)
- Amount spent: -$29 (spending adds to the debt since he is already in the negative)
The equation to find out Maxwell's current balance would be:
\[ -47 + (-29) = -76 \]
Thus, the correct option is:
\[ -$47 + -$29 = -$76 \]
This means Maxwell's current balance is -$76 after spending another $29.