James recently hired a plumber to do some necessary work. On the final bill, James was charged a total o \( \$ 629 . \$ 370 \) was listed for parts and the rest for labor. If the hourly rate for labor was \( \$ 74 \), how many hours of labor was needed to complete the job? (A) First write an equation you can use to answer this question. Use \( x \) as your variable and express any percents in decimal form in the equation. The equation is (B) Solve your equation in part (A) to find the number of labor hours needed to do the job. Answer: The number of labor hours was

Complete the following sentence. A polynomial that cannot be factored by the methods of this chapter is called A polynomial that cannot be factored by the methods of this chapter is called

Factor if possible. Check the answer by multiplying. \( y^{2}+49 \)

4. Two hikers walk away from their campsite in search of firewood. Megan walks 325 feet at bearing of \( \mathrm{S} 30^{\circ} \mathrm{W} \), while Kevin walks 400 feet at a bearing of \( \mathrm{N} 60^{\circ} \mathrm{W} \). How far apart are they? (Hint: notice that \( 60^{\circ}+30^{\circ}=90^{\circ} \) )

\( \left\{\begin{array}{ll}\frac{x+1}{x^{2}+x} & \text { si } \quad x \leq 10 \\ \sqrt{x+1} & \text { si } x>10\end{array}\right. \)

HALLAR EL DOMINIO, LOS INTERVALOS DE CRECIMIENTO Y DECRECIMIENTO, LOS EXTREMOS LOCALES Y EL VALOR DE LA FUNCIÓN EN LOS MISMOS. DETERMINAR LAS ASINTOTAS Y HACER UNGRAFICO \( F(x)=\frac{-3 x}{x^{2}+4} \quad F(x)=\frac{8-3 x}{x^{2}-2 x} \)