What is A A=B+C
C=C·B
D=B+B
D=D·D
C≠D
D·C=C
D≥C
My 12 year old cousin stumped me with this, but somehow he knows the answer, pls help

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given

Me i'm timed right now! a. (0,-5)b. (0,-3)c. (0,3) d. (0,5)