Which does not have a perimeter of 8x+8.

Figure 1 does not have perimeter 8x +8

Step-by-step explanation:

Perimeter of  shape is the sum of all the sides.

Perimeter of figure 1 = 2x +2 + x + 2x + 2 +x

                                  = 2x + 2x + x + x + 2 + 2   {Combine like terms}

                                  =6x + 4

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.