Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning. Write feedback to Arlene explaining the mistake she made and how to correct her work.

Step 1 and step 5

Step-by-step explanation:

For correcting the work, the following things need to be check out

As we can see that in step 1 it is mentioned that there is an additive inverse but this is not additive inverse as it deals with the opposite with respect to a number but as we can see there is no opposite number

The second thing she have to correct is in step 5, as it is mentioned for simplifying but actually it should not be simplify

These things are to be corrected

answer:

c. the third graph