C because u if u use the property's and u can move the parentheses and it's the same answer
Answer:
13
Step-by-step explanation:
Hi there!

f(x) = 7x - 4
Rewrite f(x) with y:
y = 7x - 4
Swap the x and y variables:
x = 7y - 4
Solve for y:
x + 4 = 7y
y = (x + 4)/7
The ratio is 22 circles:31 shapes