Answer:
An expression
Step-by-step explanation:
Here is what I think it is. 7 is not an example of an expression because an expression is an equation without an equal sign. I believe that an expression has more than 1 number in it, so 7 is not an expression.
Answer:
4m+9
Step-by-step explanation:
4(m+9)
4m+9
4(m+9)=4m+9
Answer: 7 cm
Step-by-step explanation: