The answer is C for that question
Scale factor is 4
20/5=4
5*4=20
8/7 is the reciprocal. just flip the fraction
For this case we have that by definition, a linear function is of the form

We have the following options:
A) 
Rewriting:

It's a quadratic function!
B) 
Rewriting:

It's a linear function!
C)
Rewriting:

It's a cubic function.
D) 
Rewriting:

It's a quadratic function!
E)
Rewriting:

It's a cubic function!
Answer:
The linear function is option B
2.2 pints because 1 gallon is equal to 8 pints so then you divide 8 by 3 because their is 3 containers.