A quality assurance check is 89% accurate for non-defective devices and 95% accurate for defective devices. Of the devices checked, 82% are not defective. What is the probability of an incorrect conclusion? Round your answer to the nearest tenth of a percent.

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.