Answer:
3x2|9x+18|+8|9x+18|3x2|9x+18|+8|9x+18|
685 students X 0.80 = 548 students going on the field trip.
Answer:
<u>x = -8</u>
4x + 8 = 2x - 8
3x + 4 = 2x - 4
2x + 16 = x + 8
x - 1 = 2x + 7
17x + 36 = 16x + 28
13x + 2 = 12x + 11
.......
(this is infinite)
As long as it cancels out to x = -8
