This expression is not factorable which means the answer is 8x+7
It’s the first one.
I hope this helps :)
Answer: 
Step-by-step explanation:
1. To solve this problem you must apply the formula for calculate the area of a square, which is:

Where s is the lenght of a side of the square.
2. By definition, the sides of the square have equal lenghts. You can calculate the lenght of a side by calculating the distance between two vertices of the aquare:

Where
is the lenght of the side AB.
3. The area is:

Divide the weight of Josies dog by 7:
122 / 7 = 17.43
It weighs between 17 and 18 pounds.
( C. ) m + 1 = 2
<u>Step-by-step</u><u> </u><u>explanation</u><u>:</u>
m + 1 = 2
⇒ m = 2 - 1
⇒ m = 1