Answer:
is 1,3,6
Step-by-step explanation:
A c f
0.8 times 1200 is 960, which is the number of people when the theatre is 80% full.
3/4
3*3=9
3*4=12
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x
