To qualify for a prize, a student has to sell at least \( \$ 1,500 \) worth of yearbook advertisements consist- ing of no fewer than 15 individual ads. If \( x \) is the number of full-page ads sold for \( \$ 100 \) each, \( y \) is the number of half-page ads sold for \( \$ 70 \) each, and \( z \) is the number of quarter-page ads sold for \( \$ 50 \) each, which of the following systems of inequalities represents this situation?

5 Con ayuda de un adulto, consigue 3 cauchos de diferente grosor pero de igual ta- maño. Estíralos y mide la máxima longitud alcanzada por cada uno. - ¿Qué caucho se estiró más? ¿Cuál es la fuerza que está actuando?

18, Monday do you want pancakes eggs oroatmeal asked dad

Función lineal \( y=2 x+4 \)

Change the following mixed number to a fraction in the form \( \frac{a}{b} \), where \( a \) and \( b \) are integers. \( \begin{array}{ll}\text { a. } 3 \frac{5}{6} & \text { b. }-3 \frac{3}{7} \\ \text { a. } 3 \frac{5}{6}=\square \text { (Type an integer or an improper fraction.) }\end{array} \)

Solve \( 9^{x+2}=27 \)