a screw
all of them
Lever.
There are four simple machines used to make the compound machine known as the lawn mower. These simple machines are the wheel and axle, the screw, the lever, and the wedge.
A lever.
wheel and axle
pulley and rope
A wheel and axle, and a lever make up a stroller
Rims and tires
lever and pulley
A compound machine.
wheel and axle