Here’s the first few and you can do the rest with the same principles. If you need more help with the last ones then let me know
Answer:
Move all terms that don't contain y to the right side and solve.
y = 3 + 4
x
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.
Y = 6
5y = 5 x y
5y = 5 x 6
5y = 30.
It is C. 30.
Hope This Helps You!
Good Luck Studying :)