Fill in the Missing Information by Determining the Amounts Represented $\text { Income statement }$

Fill in the missing information by determining the amounts represented by letters a - d.
$\text { Income statement }$
$\begin{array}{lr}\text { Revenue } & \$ a \\\text { Expense } & 6,200 \\\text { Iet income } & \$ b\end{array}$

$\text { Statement of Changes in Stockholders' Equity }$

$\begin{array}{lr}\text { Beginning common stock } & \$ 0 \\\text { Plus: Issuance of common stock } & 11,000 \\\text { Ending common stock } & 11,000\\\text { Beginning retained earnings } & \$ 0 \\\text { Add: net income } & 3,500 \\\text { Ending retained earnings } & \$ \mathrm{~c} \\ \text { Total stockholders' equity } & \$ \mathrm{~d}\end{array}$