2(-3)-3[-3(-2+6)+2(2-)]+2(-1) does this question = 12?

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

In the geometric progression –3, 12, −48… what term is 3,072?

How would you find the height of points on the circle? the topic is trigonometry.