Read the requirements. Also where are the operating income and loss on a graph?

$($After you hit continue the screen may take you below the beginning of the next step. If so$,$ scroll back up to the top of the step.$)$

dollars when monthly operating income of $$12,600$ is earned.

point plotted.$)$

$2,$ as appropriate, to assist in identifying plot points.$]$ Be sure to select a label for each line drawn.$)$