Answer:
Step-by-step explanation:

The answer will be 50 quarts using proportion and ratio
I’m pretty sure you add 78+55= 133
180-133=47
so 9x+2=47
subtract 2 from 47 and itself
so 9x=45
divide 9 and 45 by 9
so x=5

It is a function because here in case there is a value of y for x so it is a function.
HOPE YOU LIKED.