What is the hypothesis of the following statement if a figure is a square, then it has four sides

Can someone check if i did this correct. it’s number 4 if you’re wondering.

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?