For how many integral values of n are the numbers 2n, 3n and 10 - n the lengths of the sides of an obtuse triangle? ∵ a correct answer + a good explanation will guarantee you a :)
(This is from AMC 10 so if you answer it, Congrats! Ur rlly smart and everyone knows it :)

Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%