SOLUTION: If R(x)=x+2/1-x, then what is R(0.9)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: If R(x)=x+2/1-x, then what is R(0.9)      Log On


   

Question 149594: If R(x)=x+2/1-x, then what is R(0.9)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
R%28x%29=%28x%2B2%29%2F%281-x%29 Start with the given function.


R%280.9%29=%280.9%2B2%29%2F%281-0.9%29 Plug in x=0.9


R%280.9%29=%282.9%29%2F%280.1%29 Add 0.9 to 2 to get 2.9. Subtract 0.9 from 1 to get 0.1.


R%280.9%29=29 Divide 0.1 into 2.9 to get 29


So the answer is R%280.9%29=29