The distance between Boomtown and Dayville on a map is 13.0 cm . The scale of the map is \( 10 \mathrm{~cm}=25 \mathrm{~km} \). Approximately how far apart are Boomtown and Dayville? A. 5.2 km B. 19.2 km C. 28.0 km D. 30.0 km E. 32.5 km

Find the equation of the line passing through \( (4,-3) \) which is perpendicular to the \( x \)-axis.

b. La figura se armó con cubos cuyas aristas miden \( 3,5 \mathrm{~cm} \). Respuesta: ¿Cuál es el el volumen de la figura compuesta? de uno de los cubos?

22. A rectangular foor of a room measures 5.4 m long and 4.2 m wide. The room is to be covere with square tiles. Calculate the minimum number of square tiles that can be used to cover the floor.

\( 1^{\circ} \) a) Write \( \widehat{x O z} \) using \( \widehat{x O y} \) and b) Write \( \widehat{y O I} \) using \( \widehat{y O z} \) and c) Show that \( \widehat{x O z}=\widehat{y O t} \).

a) Zeichne den Graphen folgender Funktionen in ein gemeinsemes Koordinatensysiem: (1) \( y=2 x+1 \) (2) \( -2 x-1 \) (3) \( y=2 x-1 \) b) Gib die Schnitpunkte der drei Geraden an.