5. ¿Cuántas son las soluciones enteras no nega- tivas de \( a+b+c+d=6 \) ? \( \begin{array}{lll}\text { A) } 48 & \text { B) } 28 & \text { C) } 84 \\ \text { D) } 6! & \text { E) } 7! & \end{array} \)

\begin{tabular}{l} Find the common logarithm of 0.0524. \\ \hline \\ \( \quad \log 0.0524=\square \) \\ (Round to four decimal places as needed.) \end{tabular}

Simplify. Rationalize the denominator. \( \frac{-3}{\sqrt{7}+\sqrt{2}} \)

Simplify. Rationalize the denominator. \( \frac{-6}{\sqrt{3}-\sqrt{5}} \)

Introduction to the distributive property Use the distributive property to fill in the blanks below. \( 7 \times(5-1)=(7 \times \square)-(7 \times \square) \)

San'at saroyida bo'lib o'tiladigan Konsertga 3000 ta bilet sotuvga chiqqrildi. Bolalar biletiga talab funksiyasi Qb=6000-400Pb. Kattalar biletiga talab funksiyasi Qk=4000-100Pk. Qaysi biletdan qanchadan sotilganda san'at saroyi maksimal foyda ko'radi