Respuesta :
Answer:
6x + 4, 46
Step-by-step explanation:
Linear expression - (x +4) + (x +4) = 2x +8
2x -2) + (2x-2) = 4x -4 2x+8 +4x -4 = 6x + 4
6 * 7 = 42
42 + 4 = 46
The linear expression should be 6x + 4.
And, the perimeter is 46.
Given that,
- A rectangle has side lengths (x + 4) feet and (2x - 2) feet.
Based on the above information, the calculation is as follows:
(x +4) + (x +4) = 2x +8
(2x -2) + (2x-2) = 4x -4
Now
2x+8 +4x -4
= 6x + 4
The perimeter should be
= 6(7) + 4
= 42 + 4
= 46
Learn more: brainly.com/question/16911495