Answer:
The answer is 5
Step-by-step explanation:
Because each bus is assigned 1 class and there is only five buses so there are 5 classes
-1-3 = -4
0.71 x 22 is the expression that works, because 1 AUD = 0.71USD.
6
3x+6+5x+10=64
3x+5x+6+10=64
8x+16=64
8x=64-16
8x=48
divide both sides by 8
x=6