finding the volume of a box

when first  doing this projet we had  to be in groups we had to find the x value which was the last line on the table in that was for us (80-4x)(x+24)=84 i had 2 people in my group paula,an tishauna. the first thing we had to do was  pick what type of  promblems we wanted to do for example we choose the usps box promblem. fed ex ground exc. after  we  did that  we had to find th height width the lenght the girth and also the volume we  had the total already so we didnt have  to  really find the total. at the  end of  finding  all of these promblems we had to to fid the value of x. that was  a  hard  challege  for us  because we  didnt really understand how to  to do that  but at the  end it  became   really  simple. last but  jot  least   we had  to  make a graph  for  al the  tables  we  made  which  was a hard  task for paula  to  do but  we also  go through that because we all  got  our strengths  and weakness but we  all  had  our  oppisite  strengths like paula  wasnt good with graphs but i was  i wasnt  good  with tables but  paula  was in tishauna  was  good  with  everything except finding  x i think that  was our  main pomble with this project none of us got that . then when we  finished the project i realized all of the gneralization and maximum form and plotting was a major  effect om graphing and  doing the tables.