If r=1 and (r-b)/c = 1 which of the following is NOT a possible value of b?
Select the correct option:
A) -2
B) -1
C) 0
D) 1
E) 2
Equation is:   (r-b)/c = 1 where r = 1   so plug in 1 for r and look at it again   (1-b)/c = 1   now C can be anything we want, so if b = -2 we can plug it in and make it work   (1-(-2))/c = 1   3/c = 1   c = 3 and it works   HOWEVER, if we have a 0 in the numerator there isn't a number on earth that makes 0/C = 1   (1-1)/c = 1   0/c = 1   there aren't any matches for C to make this true   B cannot be 1.   Answer is 1
<result>D</result>
If r=1 and (r-b)/c = 1 which of the following is NOT a possible value of b?