Question

Which of the following is not a possible value of x?

A. -0.2
B. 0
C. 1
D. 3

Answer 1

-0.2 is not a possible value of x because lengths cannot be negative.

Answer 2

Option D. 3

Explanation:

For all the given options, let's substitute these values and check what length do they give for 5x+3.

A) -0.2:

5x+3 = 5 (-0.2) + 3 = 2

B) 0:

5x+3 = 5 (0) + 3 = 3

C) 1:

5x+3 = 5 (1) + 3 = 8

D) 3:

5x+3 = 5(3) + 3 = 18

So in my opinion, the option D. 3 cannot be possible value for x. The reason being that 3 gives us a length of 18 which is already shown in the diagram as the longest length.

While 5x+3 looks way smaller than the one shown by 18.