Answer:
Each one is for 1.25 or around that if thats what youre asking I cant see it too well but if its correct you're welcome
Step-by-step explanation:
x (constant) = 20 ((month)) y (variable) = 5 ((gig of data))
20x+5y=55 (7 gigs)
48 units
2
is 
. This is a linear binomial.
is a cubic trinomial. In your original question, I'm not sure what the 
means.