Our last problem is intentionally left more open$-$ended. Rather than providing the specific steps, we're going to ask you to discuss it among your group members to develop and execute a strategy. Show all work, and it's probably a good idea to write some sentences describing your approach as well. Make sure that you LIST each step in the four$-$step method, then follow that up with what you did in your solution to use that particular step.

Problem $4$: The grade in Marlene's history class will be determined completely by three tests, each worth $100$ points. She scored $78$ and $84$ on the first two tests, but still hopes to get an $A,$ which would require an average of $92.$ What's the minimum score she can get on the third test?