How do i express 3.87×10.3in standardform​

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?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Which of the following is the result of expanding the series