A submersible, which is an underwater vessel, starts at a depth of 80 feet below sea level, represented by -80 feet. It dives for several minutes. The table shows
the submersible's change in depth from one minute to the next. Use the
information in the table to determine the depth of the submersible after
3 minutes.

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.