Let's simplify step-by-step.

There are no like terms.
Answer:

W x 2 + 30 = Length because you just follow exactly what it says, in this case W would be your variable
3.5 , 7 , 10.5 , 14 , 17.5 , 21 , 24.5 . Because it increases by 3.5 each time
Answer:
hope this helps buddy, please mark the brainliest.
Step-by-step explanation: