Step-by-step explanation:

Answer:
B Survey a random sample of eighth-grade students
Step-by-step explanation:
In order to reach the best conclusion without biased data, the best sampling method would be B because not only does it survey 8th graders, but it also surveys a random group, ensuring that not all of the students are potentially excelling in and/or having trouble with homework.
Juan did.
The line on his graph takes longer to get to 8 blocks.;-D
You divide 3 and 7 or somthing
Sounds like:
12
3^2 + ---------- * (8). This evaluates to 9 + 4 * 8 ), or 9+32, or 41.
3
Note the importance of applying Order of Operations rules correctly here.