7is not an example of a) a variable b) an expression c) a constant d) a term

A) a variable

Step-by-step explanation:

A) a variable    a variable changes value  7 does not change

B) an expression    does not have an equal sign  7 does not have an equal sign

C) a constant  7 is constant, it does not change  

D) a term  is a group of numbers and variables with no operators

7 is not an example of a variable.

Step-by-step explanation:

7 is not an example of a variable.  7 is a constant (C), and could be an expression or a term.

KN= 15 units

NM= 20 units

Step-by-step explanation: