A plumber charges $50 per hour plus $75 service fee. Jackson hired a plumber to fix a leaky sink. What are the total charges of the plumber took 3 1/2 hours to complete the repairs

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.