Me with these questions plz

1. what made fibonacci angry, concerned, sad, or drove him to action? what was fibonacci for or against?

2. how did fibonacci feel about the world? what were his beliefs? what did fibonacci care most about?

Which is an equation for the nth terms of the sequence 12,15,18,21

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?