Thomas bought a new car for $27,500 when he turned 16 in 1996. His car depreciates at an average rate of 15% of its value every year. •Does this situation represent a growth or decay?
• What is the exponential base (b)?
• Write an equation to represent the data. y =

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?