#### Answer

7; 1

#### Work Step by Step

A term is composed of a numerical coefficient and a variable. The numerical coefficient is the constant in front of the variable of a term. The degree of a term is the power to which the variable of the term is raised.
Therefore, the numerical coefficient of $7z$ is 7.
The degree of $7z$ is 1, because the variable $z$ is raised to a power of 1.