L = rc
where c = angle in radians , r = radius and l = length of the arc
so
5.4 = 6 r
r = 0.9 radians
and this equals the angle at the center.
0.9
X = first class tickets , y = coach fare tickets
x + y = 42 <== equation about number of tickets sold
80x + 64y + 2880 <== equation about the revenue
My guess is team 3 because not only does it reach 100 but it does pass fourty rather than team 2 and 4 and it also has an average 50
x menos 11 menor que 7. .............................
