The length of a rectangle is represented by the expression x+5. The width is represented by the expression x+3. Write an expression that represents the perimeter of this rectangle

4x+16

Step-by-step explanation:

perimeter of a rectangle= 2(length)+2(width)

2(x+5)+2(x+3)

simplify

2x+10+2x+6

=4x+16

The question states: x^2 = 7. This means that to find x, you would do the square root of 7. If you don't need an exact answer, it would be square root of 7, but if you need an exact answer, then it would be approximately 2.645, or if rounded to the nearest tenth, 2.6. Hope this helps!