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Answer:

Step-by-step explanation:
Given, f ( x ) = - x - 3
Let's find the value of f ( - 4 )

We know that , 
⇒
Subtract 3 from 4
⇒
Hope I helped!
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Answer:
the numbers are 18 and 38
Step-by-step explanation:
x =smaller integer and y =larger integer
Answer:
10a + 2b
Step-by-step explanation:
Add the lengths of all sides:
3a + b + b + 2a - b + 3a + b + b + 2a - b
Now combine like terms:
10a + 2b