Answer:
1. m
Coefficient: 1
Variable: m
Degree: 1
Constant: Does not have one (if I am correct)
2.

Coefficient: -7
Variable: a
Degree: 2
Constant: Does not have one (if I am correct)
3.

Coefficient: 3
Variable: t
Degree: 2
Constant: -6
4.

Coefficient: 1
Variable: h
Degree: 1
Constant: 2