This Post Has 3 Comments

1. B 2x - 31 = -2x - 31 have exactly one solution

   Step-by-step explanation:

   Which of the following equations have exactly one solution?

   Choose all answers that apply:

   A 2x - 31 = 2x - 31

   B 2x - 31 = -2x - 31

   C 2x + 31 = 2x - 31

   D 2x - 2 = 2x - 31

   A. 2x - 31 = 2x - 31

   2x-31=2x-31

   Collect like terms

   2x-2x= -31+31

   0=0

   Infinite number of solutions

   B 2x - 31 = -2x - 31

   2x - 31 = -2x - 31

   Collect like terms

   2x+2x=-31+31

   4x=0

   x=0

   One solution

   C 2x + 31 = 2x - 31

   2x + 31 = 2x - 31

   Collect like terms

   2x-2x= -31-31

   0= -62

   No solution

   D 2x - 2 = 2x - 31

   2x - 2 = 2x - 31

   Collect like terms

   2x-2x= -31+2

   0= -29

   No solution

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2. d? maybe

   step-by-step explanation:

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3. D. i think it is the savings

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