Sam swam x fewer laps than his friend Kristen, who swam 3 laps. Which expression represents the number of laps Sam swam?

A) x/3

B) 3-x

C) 3x

D) x-3

Im pretty sure 3x it is

a) 9000 ft-lb

b) 9000 ft-lb

Step-by-step explanation:

Equation for the work:

The equation for the work done is given by:

In which F is the force needed and d is the distance. The time does not interfere on the work.

A 300-lb gorilla climbs a tree to a height of 30 ft

This means that

Thus

The work done in both cases is of 9000 ft-lb, as the work is not a function of time.