Answer:
x = 0
Step-by-step explanation:
the origin
The fifteenth customer will be the first because 5x3=15
Answer:
(-2,1),(-1,2),(-3,5/3)
Step-by-step explanation:
Start with expression 
1. Separate terms - with x leave in left side, without x write in right side:

2. Divide the last expression by a (
):

Answer: this statement is true when
.