A group of 41 teachers went to Disneyland. A regular ticket cost $113. The senior rate is $109. If the total admission price was $4561, how many teachers got the senior rate?
+36916 s = seniors revenue from = $ 109 s
41-s = regular revenue from = $ 113 (41-s) summed = $ 4561
109 s + 113 (41-s) = 4561 solve for 's' the number of senior tix
