16-20. i really have no clue how to do it. step by step.

We just started the introduction into circles and i have no idea how to do this.

In which quadrant does the point lie? write the coordinates of the point. a. quadrant ii; (–2, –4) b. quadrant iii; (2, 4) c. quadrant iii; (–2, –4) d. quadrant iv; (–4, –2)

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625