What is the sum of the interior angles of the polygon shown below?

Find the range of the function. \( f(x)=\left\{\begin{array}{l}\frac{1}{8} x, \text { for } x<0 \\ x+5, \text { for } x \geq 0\end{array}\right. \) \( \begin{array}{l}(-\infty, 0) \cup(5, \infty) \\ (-\infty, \infty) \\ (-\infty, 0) \cup[5, \infty) \\ (-\infty, 0] \cup(5, \infty)\end{array} \)

Find the domain of the function. \[ \begin{aligned} f(x) & =\left\{\begin{array}{cc}\frac{1}{8} x, \text { for } x<0 \\ x+5, & \text { for } x<0\end{array}\right. \\ \text { a } & (-\infty, \infty) \\ & (0, \infty) \\ \text { o } & (-\infty, 0) \cup(5, \infty) \\ & (-\infty, 0) \cup(0, \infty)\end{aligned} \]

Find the matrix associated with the rotations (a) \( \pi / 2 \) (b) \( \pi / 4 \) (c) \( \pi / 6 \).

Soit lévénement \( A \) : "Un élève a réussi lexamen". Quelle est la signification de lévénement contraire \( \bar{A} \) ?

4. Yasmine is a pharmaceutical sales representative. Her firm gives her a weekly allowance of \( \$ 300 \) to spend on lunches with physicians and their office staffs. A restaurant from which Yasmine often buys the lunches charges \( \$ 7 \) for a cold dish and \( \$ 11 \) for a hot dish, including drinks. If each meal is subject to a \( 5.75 \% \) sales tax, which of the following inequali- ties represents the number of cold dishes (c) and hot dishes \( (h) \) that Yasmine can purchase for sales-related lunches in one week, assuming she purchases all the lunches from this restaurant? A) \( 7 c+11 h \leq 1.0575(300) \) B) \( 7 c+11 h \geq 1.0575(300) \) C) \( 1.0575(7 c+11 h) \leq 300 \) D) \( 1.0575(7 c+11 h) \geq 300 \)