Answer:
cosine
Step-by-step explanation:
Answer:
RO
Step-by-step explanation:
25. yes it's direct variation
26. yes
The best way to answer this is to find counterarguments for each answer to eliminate them as a possibility. ab doesn't have to be an integer, 2.5*3=7.5 . That's also not an imaginary number so that's out. And that's also not an irrational number so that's out too. Only choice left is rational number.