Is it 2 different questions or just one?
Answer:
Check below
Step-by-step explanation:
That's too bad you haven't attached a rectangle.
Here's an example, with the data you've typed in.
1) When we dilate a rectangle we either grows it or shrink it through a scale factor.
Check the first picture below.
The New Dilated Rectangle A'B'C'D' will follow its coordinates, when the <u>Center of Dilation is at its origin(Middle):</u>

2) But In this question, <u>B is the center of Dilation</u>. So, Since B is the Dilation Point B=B' . And More importantly:

3) So check the pictures below for a better understanding.
Answer:
4^{10}
Step-by-step explanation:
Complete the exponents first.
4*4=16
4*4*4*4*4*4*4*4=65536
65536
*16= 1048576
The answer is 
You can also find this if you add the exponents.
It is 109
Hope it helps !!
2x+4x-4=80
6x-4=80
6x=84
84/6=14
Angle c = 4 x 14= 56 - 4 = 52
Hope this helps.