Mrs. haines paid $43.94 per gallon for 12.7 gallons of gas. she uses some credit card points to get $0.52 off per gallon. what is the original price of the gas per gallon?

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?