The answer that I would choose would be C.
The rate of the cups of vinegar per tablespoon of lemon oil is two per tablespoon rates in cups
It typically just needs two parts
1) all parties must be in agreement
2) something of value needs to be exchanged. ie. money, a service
(-4,4) (3,-2)
formula for finding mid point is
M=(x1+x2/2,y1+y2/2)
m=-4+3/2,4-2/2
m=(-1/2,1)
|7 - m| = 1
|7 - 6|
m = 6
hope this helps
