John3047go John3047go Math Answered 14. Which family of functions does f(x) = belong to? A. Rational C. Exponential D. Logarithmic B. Trigonometric 15. What value of x in f(x)= 5-x x +3 will make the function undefined? C. 3 A. 5 B. -3 بنام بی D. 5