Hi I hope you can help me!plz I need an answer

Solve: 3x+y=6 4x-2y=18 show all work !

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2