Which of the following graphs corresponds to the following set?

Analise as afirmativas abaixo, e marque se afirmativa é Verdadeira ou Falsa. Verdadeira Falsa \( \begin{array}{l}\text { Aresta é cada } \\ \text { lado comum a } \\ \text { duas faces } \\ \text { quaisquer de } \\ \text { um poliedro. } \\ \text { Vértice é cada } \\ \text { ponto em que } \\ \text { se encontram } \\ \text { os lados das } \\ \text { faces de um } \\ \text { poliedro. }\end{array} \)

During the holiday season, Brianna sold scarves at a kiosk in a shopping mall. Embroidered floral scarves cost \( \$ 27 \) each, and sheer chevron scarves cost \( \$ 13 \). One day she sold 42 scarves. Total recelpts for the day were \( \$ 770 \). How many of each kind of scarf did she sell? Brianna sold \( \square \) embroidered floral scarves and \( \square \) sheer chevron scarves.

A parabola opening up or down has vertex \( (2,1) \) and passes through \( \left(7,-\frac{21}{4}\right) \). Write its equation in vertex form. Simplify any fractions.

Describe how the graph of the following function can be obtained from one of the basic graphs. \( g(x)=\left|\frac{1}{4} x\right|+1 \) To obtain the graph of \( g(x)=\left|\frac{1}{4} x\right|+1 \), start with the graph of \( y=\square \) unit(s).

b. \( \sum_{k=1}^{8}\left(k^{2}-6\right) \)