The logistic growth function \( f(t)=\frac{112,000}{1+5200 e^{-1}} \) describes the number of people, \( f(t) \), who have become ill with influenza \( t \) weeks after its initial outbreak in a particular community. a. How many people became ill with the flu when the epidemic began? b. How many people were ill by the end of the fourth week? c. What is the limiting size of the population that becomes ill?

3 Find the common difference. \( 5, \frac{25}{4}, \frac{15}{2}, \frac{35}{4}, 10, \frac{45}{4}, \ldots \)

10.2.2 Determine \( \mathrm{P}( \) only C\( ) \), if it is further given that \( \mathrm{P}(\mathrm{A} \) or C\( )=\frac{7}{10}, \mathrm{P}(\mathrm{A} \) and C\( )=\frac{2}{5} \) and \( 2 \mathrm{P}(\mathrm{B} \) and C\( )=\mathrm{P}(\mathrm{A} \) and C\( ) \)

Escribe las siguientes cantidades en unidades del SI y en notación científica, utilizando el método de los factores de conversión: a) \( 34,78 \mathrm{ng} / \mathrm{l} \) b) \( 77,6 \mathrm{pm} / \mathrm{hora} \) c) \( 34,78 \mathrm{Gg} / \mathrm{dm}^{3} \) d) \( 346 \cdot 10^{-2} \mathrm{Mg} / \mathrm{L} \) e) \( 694,98 \cdot 10^{-7} \mathrm{\mu g} / \mathrm{cm} \)

\( \left. \begin{array} { l } { } \\ { f ^ { 2 } ( x ) + 1 = 2 f ( x ) + e ^ { 2 x } } \end{array} \right. \)

Which statement is an example of the Subtraction Property? \( \begin{array}{ll}\text { [A] If } a=b \text { and } c \neq 0 \text {, then } \frac{a}{c}=\frac{b}{c} & \text { [B] If } x+3=9 \text {, then } x+3-3=9-3 \text {. } \\ \text { [C] If } 8 x=9 \text {, then } \frac{1}{8}(8 x)=\frac{1}{8}(9) . & \text { [D] } 1 \div 1=1\end{array} \)