SOLUTION: Let f(x)=x-18 and g(x)=sqrt(x-3) I need to find (f/g)(12) and Find the domain of the quotient function f/g Could you please provide guidance on how I solve these?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Let f(x)=x-18 and g(x)=sqrt(x-3) I need to find (f/g)(12) and Find the domain of the quotient function f/g Could you please provide guidance on how I solve these?      Log On


   

Question 1149341: Let f(x)=x-18 and g(x)=sqrt(x-3)
I need to find (f/g)(12)
and
Find the domain of the quotient function f/g
Could you please provide guidance on how I solve these?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
%28f%2Fg%29%28x%29=%28x-18%29%2Fsqrt%28x-3%29

x must be GREATER THAN 3.
If x less than 3, denominator is square root of negative value, so not acceptable. If x 3, then denominator 0, so not acceptable.


You want the ratio function for x at 12? Substitute for 12 and evaluate.