Answer: c for the first part
1,6 for the second
nether for the third
Step-by-step explanation:
all on edg
Rotation about the origin
4(1/2x7)=12 <=> x28/2=12
x=12*2/28=24/28=12/14=6/7
Proportionality, assuming constant rate. 460 dives/12 hours = x dives/3 hours. Solve for x.