D Adele pays a flat fee of $30 to register for dance classes for the 2021 year. She will pay S8 per
dance class for the year.
e
27 Is this situation LINEAR or EXPONENTIAL?
f
28 How do you know
29 Write an equation to model the cost (y) that she will pay based upon the number of
classes (x) that she takes.

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?