Which of the following is not least than 0.25

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles