So what is the question i didnt get it?
Answer:
B
Step-by-step explanation:
Make a proportion.
x is the number of balloons sold each day.

Here are 3= 7:1 28:4 56:8
Answer:
f(g(x))=5-(7/x)
Step-by-step explanation:
f(x)=(x-3)/x
g(x)=5x-4
f(g(x))=((5x-4)-3)/x
f(g(x))=(5x-7)/x
f(g(x))=(5x/x)-7/x
f(g(x))=5-(7/x)