Answer: 
Step-by-step explanation:
1. The formula for calculate th area of a square is shown below:

Where s is the side of the square.
2. Therefore, if the square tabletop has side lengths of (4x-8) units you have:

3. By definition, the square of a binomial is always a trinomial:

4. Then, you obtain:

I’m not completely sure about the answers but i can say this: every month adrienne get 5 new dollars. so if it was at like 2 months and $10 (for example) the next month (month 3) she would have $15
Answer:
See the attached figure.
Given:
u = (-3.5 , -1.5) and v = (-1.25 , 2.25)
So,
2v = 2 * (-1.25 , 2.25) = (-2.5, 4.5)
∴ 2v - u = (-2.5, 4.5) - (-3.5 , -1.5) = (1 , 6)
The graph of the vectors is as shown in the attached figure.