A sample of statistics exams from a university has a mean of 75 and a standard deviation of 7. Penny has scored a 92 on her exam. What is Penny's \( Z \) score in the sample?

Solve the inequality \( \frac{1}{x+9}>3 \) Give your answer in interval notation. \( \square \) Preview

\( 9 \times 10^{2} \) is ? times as much as \( 3 \times 10^{-2} \). If

Which unit is larger? A Mile or a Kilometer Kilometer

\begin{tabular}{l} Part 1. Read the article and answer the following questions: \\ 1. Explain Brian Cox's referent power. How does the author use ethos (the appeal to \\ credibility) when introducing Brian? \\ \( \begin{array}{l}\text { Brian cox's referent power comes from his respect and expertise in science. The } \\ \text { author uses ethos by emphasizing his qualifications and achievements. } \\ \text { 2. What does he mean by "mctiern-day McCarthyism"? } \\ \begin{array}{l}\text { Modern day mcCarthism refers to a situation similar to the 1950s antic communist } \\ \text { which hunts, where individuals are accused without evidence }\end{array} \\ \text { 3. Define fascism, excommunicated, and insidious. } \\ \begin{array}{l}\text { Fascism: A political ideology characterized by authoritarianism, nationalism, and the } \\ \text { suppression of opposition. } \\ \text { Excommunicated: The act of officially excluding someone from participation in a } \\ \text { religious community or organization. } \\ \text { insidious: Something that is harmful bt often in a subtle or gradual way. }\end{array} \\ \text { 4. What is Brian Cox's overall claim? }\end{array} \) \\ \hline\end{tabular}

8 It is given that \( c=\frac{b x^{2}}{a}+8 \). (a) Find the value of \( c \) when \( b=0.2, x=-3 \) and \( a=6 \). \[ \left(=\frac{(0 \cdot 2)(-3)^{2}}{6}+8\right. \] (b) Express \( x \) in terms of \( a, b \) and \( c \).