The fulcrum of a lever is the point on which it turns. based on the function, how many pounds of force are needed to lift the rock if the distance from the fulcrum is 6 feet?

10 pounds of force

10 lb of force are needed to lift the rock if the distance from the fulcrum is 6 feet.

Step-by-step explanation:

From the given graph it is clear the curve passing through the point (1.5,40), (2,30), (2.5,24), (3,20) and (4,15).

These points satisfy by the equation

where, x is the distance in feet from the fulcrum and y is needed force in pounds.

Put x=6 in this equation,

Therefore, 10 lb of force are needed to lift the rock if the distance from the fulcrum is 6 feet.