Answer:
Here,
First Find distance between them by using formula √+x2-x1)2+(y2-y1)2
Then use the equation and then find locus.
The answer to 4 1/5 divided by 2 4/5 is 3/2
20L = 20,000mL. 20,000 / (22+3) people = 800mL/person
Part A : y=$0.75m+$4.50
Part B : $8.25