What is the square root of -1?

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

Ngrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. she divides the trail mix into 12 equal portions. each portion weighs 0.7 pound. how many pounds of raisins did she use to make the trail mix? express the answer to the nearest tenth.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out