Michelle is scuba diving. Her position changes from -2.1 m to -38.6 m in 6 min. What is the average change in Michelle's position each minute? Show your work.

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y