What are my variables of my project ?

I maybe wrong but I'm guessing 1b 1c 4p 1b _s 1_ 1_ ok let me explain.. 1b for balloon because it's the same thing as b. Then for the blanks _ s means put the #of screwers in front of s and after the 1's at the end make up a letter for bendy straw and straight straw because they have the same first letter as something else I hope this helps I'm no math genius but I am in algebra! If all fails ask a parent! Lol oh and I did the exact same car thing in 5 th grade too!:) it was neat