The first and seventh multiples of 7 are factors of 49. (7 and 49)
Answer: 
Step-by-step explanation:
The area of a square is 
Substituting d for x, you get 1/2x^2
Hope this helps <3
The picture is completely black I’m not sure if that’s what you’re trying to fix but I think you didn’t uploads it correctly.
D because they all increase by the same number (+1)