Pie graphs are supposed to always represent 100% of the described information.

Pie graphs represent 100% of the described information, yes. But they also describe the parts of that whole. A pie chart is a show of information of the whole. Say a mixture of m&m's and peanut butter cups are mixed in a bowl, and the mixture is 50% of each type. The pie graph, which is a circle, would have half of the pie graph one color and the other an other color. All the parts and the color which represent it are labeled.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3