The cost of a school banquet is $65 + $11n, where n is the number of people attending. Which is the cost for 70 people
+20 $${\mathtt{65}}{\mathtt{\,\small\textbf+\,}}{\mathtt{11}}{\mathtt{\,\times\,}}\left({\mathtt{70}}\right) = {\mathtt{835}}$$
Simple as that. Just input 70 in place of n.
+20 $${\mathtt{65}}{\mathtt{\,\small\textbf+\,}}{\mathtt{11}}{\mathtt{\,\times\,}}\left({\mathtt{70}}\right) = {\mathtt{835}}$$
Simple as that. Just input 70 in place of n.
