The necessary journal entries are:
Bank Service Charge:
- Debit: Bank Service Charge Expense \( \$50 \)
- Credit: Cash \( \$50 \)
Correction of Check No. 919:
- Debit: Cash \( \$9 \)
- Credit: Utilities Expense \( \$9 \)
\[
\boxed{
\begin{array}{|c|c|c|c|}
\hline
\text{Transaction} & \text{General Journal} & \text{Debit} & \text{Credit} \\
\hline
\text{b. Bank Service Charge} & \text{Bank Service Charge Expense} & 50 & 0 \\
\hline
\text{b. Bank Service Charge} & \text{Cash} & 0 & 50 \\
\hline
\text{c. Correction of Check No. 919} & \text{Cash} & 9 & 0 \\
\hline
\text{c. Correction of Check No. 919} & \text{Utilities Expense} & 0 & 9 \\
\hline
\end{array}
}
\]