Please help me Describe what a solution is for a system of equations and explain how this relates to setting the equations equal to each other?​

The spotter on the ground is standing beneath the safety net. what is his distance from the base of the platform, to the nearest meter? 3 meters, 2 meters, 4 meters, 1 meter?

What is the distance between the points (2, 5) and (5,9)?

Simplify. 3(4+4x) (type your answer in with no spaces)