What is the sum of the series? 20 sigma (5-n) n-1 a-220 b-110 c-95 d110

the square root of what number? if you add that, then someone will probably answer the question.

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i