Easy! will mark what is f(3) for the function f(x)=7x+5

26 is the answer

Step-by-step explanation:

Graphing it out by literally finding random x values and plugging it into the equations (e.g. for x=1 and y=2x-1, 2*1-1=1, so we have (1,1)) then connecting the dots (make sure you're only connecting dots from the same equation!), we connect them and you can easily find the answer from there!