Kaitlynn

I have this sentence: Whos in the office now? My answer choices are Whos in, Whose in, Who is in, Who's in, and Whose in'. I selected Who is in as my answer and that is incorrect. Could anyone explian to me why that is?

What place or object in Washington D.C. looks like a conic section?

what is 4.5mi/h = ft/sec

I need help please If m L1 = 43 what is m L4? L is an angle sign btw

1.8`C

J was right 100%