Step 2 Options: Draw an arc with center X
Draw an arc with center B
Draw another arc with center Y opposite the first arc

Step 3 Options:
AB
XY
YC

Step 4 Options:
Draw line CB
Draw line XD
Draw line YD

answer is:

1.75 pounds

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

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.