The function file should contain an if statement to distinguish between the different cases. Also, if the input is x = 11, the function should display "the function is undefined at x = 11". Test your function by evaluating f(4), f(5), f(5.5), f(10), f(11) and f(12)

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?