Investigate to cell phone plans (koodo v. s. chatr) and determine which one is most cost and user- efficient for my everyday needs. consider questions like: -what options would i like on my phone? ( data, texting, and other applications) -how often i would use my phone? what are the comparisons of the two plans with regard to cost, application, usage, and other important features. what are the algebraic expression to represent the monthly plan for each plan (e. g.,$150-purchases price of phone +$65.60 n)

Naruto is choosing between two venues that will deliver food to his house. with probability 1/3 he will choose ramen mania (r), and with probability 2/3 he will choose sushi (s). if he chooses r, 15 minutes after making the call, the remaining time it takes the food to arrive is exponentially distributed with average 10 minutes. if he orders s, 10 minutes after making the call, the time it takes the food to arrive is exponentially distributed with an average of 12 minutes. given that he has already waited 25 minutes after calling, and the food has not arrived, what is the probability that he ordered from r? i am really stuck on how to set this up, so if you could be extra clear, that would be super ! in advance