7.47/3 = 2.49
1 yard = 2.49
2 x 2.49 =
4.98 is how much it will cost for 2 extra yards
Answer:
(D) 
Step-by-step explanation:
Two variables x and y are proportionally related if they can be written in the form y=kx, where k is the constant of proportionality.
From the given options, if 
(B)
is of the form y=kx
(C)
is of the form y=kx with
as
in its lowest form.
(C)
is of the form y=kx with
as
in fractional form.
On the Contrary,
In Option D,
does not represent a proportional relationship between x and y. The constant of proportion is supposed to be a product of x.
What I would do for this problem, is move all the terms that don't contain m to the right side, and then solve.
m = 4/5.