A circle centered at the origin has a radius of 13 units. The terminal side of an angle, Θ, intercepts the circle in quadrant 1 at point C. If the x-value of point C is 5, what is the value of cosΘ?

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?