\( 1<\quad \begin{array}{l}\text { Sketch the graph of the equation. } \\ y=x^{2}-4 x-2\end{array} \)

15-26 a Trace la gráfica de la función polinomial. Asegúrese que su gráfica muestre todos los puntos de intersección y exhiba el com- portamiento final apropiado. 15. \( P(x)=(x-1)(x+2) \) 16. \( P(x)=(x-1)(x+1)(x-2) \) 17. \( P(x)=x(x-3)(x+2) \) 18. \( P(x)=(2 x-1)(x+1)(x+3) \) 19. \( P(x)=(x-3)(x+2)(3 x-2) \)

a. \( \lim _{t \rightarrow \infty} \frac{3-t}{\sqrt{4+3 t^{2}}} \)

in mm

Use matrices to find \( \mathbf{u}+\mathbf{v}, \mathbf{u}-\mathbf{v} \), and \( 3 \mathbf{v}-\mathbf{u} \) \[ \mathbf{u}=(-7,7), \mathbf{v}=(3,5) \] (a) \( \mathbf{u}+\mathbf{v} \) \( \mathbf{u}+\mathbf{v}=\square \)

4, plus 3 years. A 31 -year old 17) Itook Mr. Sawyer 20 minutes to cut a log into 5 pieces. How many minutes would it take him to cut a log into 10 pieces?