A restaurant is having a two-day competition to see which server can sell the most appetizers. On the first day, Jennifer sold 10\%10% more appetizers than Heidi. On the second day, Jennifer sold 66 appetizers, but Heidi was unable to sell any. Jennifer sold 40\%40% more appetizers than Heidi after the two days. How many appetizers did each server sell?

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?