\( \frac { ( n + 1 ) ! } { ( n + 1 ) ^ { n + 1 } } = \frac { n ! ( n + 1 ) } { ( n + 1 ) ^ { n } ( n + 1 ) } = \frac { n ! } { n ^ { n } ( \frac { n + 1 } { n } ) ^ { n } } = \frac { n ! } { n ^ { n } ( 1 + \frac { 1 } { n } ) ^ { n } } \)

The function \( P(x)=\frac{120}{1+372 e^{-0.133 x}} \) models the percentage, \( P(x) \), of Americans who are \( x \) years old and have some degree of heart disease. What is the percentage, to the nearest tenth, of 39 -year olds with some degree of heart disease?

If \( f(x)=\frac{7}{x+5} \) and \( g(x)=\frac{x+73}{x^{2}-25} \), determine \( (f+g)(x) \) \( (f+g)(x)=\frac{\pi+32}{x^{2}-25} \) \( (f+g)(x)=\frac{x+32}{x+5} \) \( (f+g)(x)=\frac{8}{x^{2}-25} \) \( (f+g)(x)=\frac{8}{x-5} \)

Suppose that the functions \( u \) and \( w \) are defined as follows. \( \begin{array}{l}u(x)=-5 x+1 \\ w(x)=-x+5\end{array} \) Find the following. \( \begin{array}{l}(w \circ u)(1)=\square \\ (u \circ w)(1)=\square\end{array} \)

(c) \( f(x)=5 x(2 x-5)^{2} \) Ralls to the left and rises to the right Rises to the left and falls to the right Falls to the left and falls to the right

\( \int _{}^{} d m \)