A film crew is filming an action movie, where a helicopter needs to pick up a stunt actor located on the side of a canyon. The stunt actor is 30 feet below the ledge of the canyon. The helicopter is 25 feet above the ledge of the canyon.

Which of the following expressions represents the length of rope that needs to be lowered from the helicopter to reach the stunt actor?
1. |-30| -|25|
2. -30 -25
3. -30 +25
4. |-30| +|25|

4. |-30| +|25|

What is the length of rope that needs to be lowered from the helicopter?

? feet

The length of rope that needs to be lowered from the helicopter can be calculated using the expression: |-30| + |25| = 30 + 25 = 55 feet.

Therefore, 55 feet of rope needs to be lowered from the helicopter to reach the stunt actor.