To find the side lengths, you have to factor 4x^2 + 28x + 49. This equation factored is (2x+7)(2x+7), so each side length is (2x+7) feet.
Answer:
9
Step-by-step explanation:
1. D
2. D
I don't know the answer to number 3 sorry.
Answer:
-3/4
Step-by-step explanation:
To find the slope of the line, use the slope formula:

The slope of the line is -3/4.