Answer:
third one is a required answer.
x =2y
or
1/x=y
We always start from right side in order of operation in any equation
we can set up equation as
step-1:
x divided by three
we can write as

step-2:
six more than x divided by three
so, we get

step-3:
y is six more than x divided by three
so, we get

and this is in y=mx+b form
so, we have
...............Answer
There are several information's of immense importance in the problem. Based on these information's the answer to the question can be easily reached. The only thing that has to be kept in mind is the calculation part, otherwise it is a simple problem.
Now it is given that:
A large chocolate shake takes 8/9 of a pint of milk.
Then
Amount of milk required to make medium shake = (8/9) * (1/7) of a pint
= 8/63 of a pint
Then it can be said that for making a medium chocolate shake , 8/63 of a pint of milk is required. This is the simplest form of the fraction and it cannot be expressed as a mixed number since the denominator is higher than the numerator.
I
2/5 of 2.5. = 2x2.5 / 5x1 = 5/5 = 1 pound
P = A(1+r)^x
where P is the population at time x
A is the initial population and r is the growth/decay rate. Growth will be +positive r number added to the 1. Where as decay subtracts r. So any answers that are > than 1 which is answers A and B.