Answer:
This time all of them are right
I'm not writing this to achieve points, I have already actually check and read through it :D
Good work mate
Step-by-step explanation:
It’s D
the x in f(x) is the x axis
look at 3 in the x axis
you see that it goes up to 8 y-axis
f(3)= 8
Mechanical Advantage = Force by Hammer / Force by Nail = 160/40 = 4